Kayn Build Guide by DarkAuraLOL
Dark Aura Rank 1 Kayn. S11 Challenger guide.By DarkAuraLOL | Updated on March 4, 2021
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Runes: Blue Kayn into squishies
+9 Adaptive (5.4 AD or 9 AP)
+9 Adaptive (5.4 AD or 9 AP)
+10% Attack Speed
+9 Adaptive (5.4 AD or 9 AP)
Ability Order Maxing Q
Threats & Synergies
Amumu is one of the easiest matchups for Blue Kayn. In this matchup, you can permanently invade him with no threat, also you out clear him, and he's immobile. You will get a huge lead, just cheese him camps early and track his pathing so that he becomes so behind.
Diana kind of has tanky stats into Blue Kayn, her clear is not that bad, and it's healthy, hence why this matchup is even. You have to cheese her camps early, and get a slight lead and track her well to make her fall behind, then you can counter gank her and be much stronger to the point you get form and mythical item then you're fine.
His clear is not bad, he has a huge burst early, that's where the issue lies. If you want to stomp this matchup, just catch him low health in his jungle cause he doesn't have a healthy clear, and you should be fine. Also, you'll eventually out farm him and you have better ganking potential. Still an even matchup.
Ekko is one of the easiest matchups ever in the jungle. The champion is weak in every single aspect. You can permanently inavade him pre-6, he has a slow and an unhealthy clear where you can just invade him anytime you want. Also you can oneshot him mid/late, force his ult everytime, and with you e and r, you can catch up with his mobility.
Elise is a lovely matchup I would say. She gives you such an early form, you will always win early fights with her with electrocute, and you have a faster clear. Free to invade.
One of top 5 easiest matchups for Blue Kayn, also commonly known as one of the weakest junglers early. Make sure to abuse her pre-6, she has 0 escape nothing to do against you.
If you invade him at the right time, where he is doing a double clear or so, he will be low on health, perhaps you can one shot him, sometimes you can make it to his blue early game where he does blue and gromp, take your raptors then invade his blue, he's free. he'll give you an early form, although he's gonna be annoying with his CC and zhonyas mid/late. He also scales and got a nice jungle clear.
Gragas does not have the fastest clear, which is good for you, you can always maintain a lead on him. Also, Gragas's clear is not the healthiest, and he lacks early DPS, you can sneak invade his camps, and track his pathing to counter gank easily. You're always over performing him with your damage.
This is one of the most skilled matchups, he has one of the healthiest clears in game, he has mobility, burst, and DPS. Not an easy matchup I have to say, but, if you sneak invade him, or cheese him early, you win. If not, you'll eventually outscale him with form and mythical item, and one shot him. Make sure you don't let him invade you, and don't fight him for long, cause he will kite you off.
Another one of those skilled matchups. He is really strong early with conqueror, if you have the situation of "conqueror blue kayn" it will help, but don't force it. You can always cheese him, and if he invades you back, ping your team he usually runs ghost, so he can get cc chained easily.
A very annoying matchup, he always will take one of your camps, so most of your invades are countered, never let him take a camp for free, tell your team to ward, always make sure if he takes your red, you take something in return, also ward and spot him on map for your team, his ganking potential is really good, and he can be really annoying late game, avoid his root at all costs . You can fight him and counter gank him early game though
you have a faster clear and better sustain, as per usual invade his raptors and red, if that doesn't work, you will outclear him anyways don't worry, also if you dodge his combo you are stronger at 1v1's early, you can out clear him and look for ganks before him , and counter ganks , hes not a threat through midgame and late, you will probably have 100 cs lead also u can one shot him upon blue form if he doesnt go much arrmor , and if he goes full tank hes not that much of a threat into your team .
jax defenitely be annoying sometimes, but you can always outclear him by two levels, as usual invade him , try cheese on raptors into red, dont fight him on same health and lvls, get advantage, more items, then u can fight him, also after blue form you can one shot him and ult him on his e, easy matchup overall
If you are playing normals and got mirror matchup, the one who out paths and out farms will win, no matter what form, so look for invades, read his pathing , get lvl advantage and you're fine. also counter build, like executioners if he's going red etc..
he has a fast clear, but he loses alot of hp, you can fight him at all times, just side step his q's , also use your q to dodge and hit him at the same time, fast early form into this matchup, and you can kill him alot in his jungle, + steal some camps , try cheese on his raptors too , would make him rage quit, at blue form, you can one shot him always .
Not a tough matchup for me, but generally it is, my advice on this matchup, go for early cheese, either cheese his raptors and smite his red, hopefully he doesn't have vision, also if it is warded, go for your raptors into invading his blue, try not to fight him early unless hes a bit lower hp than you, you will out clear him , so just try not to die early, but also maintain camp advantage, once you get tiamat, you can fight him if you're not isolated at 6, also upon blue form, you can one shot him before he even press ult, overall, u have faster clear, and more ambush kit , use that to your advantage, he has a stronger early, and stronger 6, avoid him at 6 unless hes rly low and you're not isolaed.
Kindred doesn't have the best clear, so you're gonna out clear her, also if you cheese invade her you will be really ahead, you can invade her, but try to fight her if shes a bit lower than you, also dont be chasing her around alot, she can kite you well early, especially if she dodges your w, overall, you're eventually gonna be stronger than her once you get tiamat, and you can outclear her and out gank her, just be patient, but don't let her scale for free, make sure you steal her camps, and get some orbs from her , also on blue form you can destroy her .
The toughest matchup, literally, he has a fight clear, fine sustain, he has such huge burst and dps on you early game, so avoid him in jg at all costs, dodge q's cause if you get hit, you're doomed early, also try to play oppositely on his map, or just try to steal his camps or smite and run , you will out clear him as kayn, but if you die to him or your team feeds him you're gonna have a hard time, basically until you get tiamat and jg item, you can't do anything, you can try to depend on your team or call them if he invades you, also when you hit blue form if you're not behind and he's not fed, you're gonna be fine .
she has almost same clear as you, but she loses more health, also shes really weak early in 1v1's , so try to invade and steal her camps, fight her early for first blood or some orbs, fight her for camps, try to take 2 scuttles, you'll get an early form in this matchup so you'll be fine, you'll eventually one shot her on blue form too and be really ahead , you can ult her ult, actually a nice matchup .
you can outclear master yi in this matchup, also try to catch him on low hp in his jungle, you can easily outsmite him, he has low mobility early ,easy escape or chase, his gank potential is bad, you can counter gank him well, also, once you get jg item and tiamat, you can 1v1 him , but you cant just all on him, try to go burst him then e out, and he'll chase you, then you can use R and delay him, then hes gonna use his w, you can after than try to fight him after his ult expires, but if you guys are equal on level health and gold , he will win 1v1 early, so care, also you will outscale him if he doesnt get fed , just make sure you take his camps and protect yours and you'll be fine
Avoid her long range q, you have faster clear, better sustain, her mobility isn't the best, you can see her low hp on her jungle and go for her, early form, perhaps first blood, steal camps, avoid full range q and you win 1v1's, care she camps in bushes for a full range q, try to counter gank her cause you are stronger early , after you get form and items , you'll stomp her
such an annoying matchup, avoid fighting him at all costs ,even if he's lower hp than you, just try to steal camps and get out, try to play on opposite side of map, only counter gank if your laners are strong , go for scaling , outfarming, once you get items and form you can manage , try to use your smite to negate his shield .
Nunu & Willump
easy , he can't stop you from invading him and stealing his camps, cheese his raptors, try to smite his red then , go for invades and fights, he's really weak early, he usually has q on cd, so don't be afraid of him securing camps, also try to spot him and ping your team to avoid his strong gank potential, counter gank him, get form and you'll 1v9 while he won't even be tanky enough
He has a clear that might faster than yours , he has permanent sustain, he can legit burst you to half in 2 seconds, he has permanent dps, avoid fighting at all costs until you get some good burst items and you're with team, also try to sneak steal his camps, and ping your team to protect your camps, once you get heal reduction and form with some items, you'll be fine .
One of the toughest matchups, pantheon has a great early, he can almost fight you at all points in the game, just try to play it really safe around him, whenever you invade make sure he doesn't see you, or you have a way out, try to outclear him and get fed by ganks then you can manage with him.
she can stop your q's, e you into wall with your e, ult you away upon engage, a really annoying champion to play against as kayn. Good thing though, her clear and healthiness isn't that great, which you should abuse, perma sneak invade her.
you can kill him early, easy invades, faster clear than him, just ward and ping for your team , spot him, cause his gank potential is annoying, don't play it safe and passive cause he can scale with his tankiness and be an issue, make sure to counter invade him alot, hold him behind, stomp early, try to counter gank him, get early form, and stomp his backline, he'll be weak to your team and easy game .
his clear is not bad, you certainly have a faster clear though, his gank potential is really risky, also he can always ping his teammates to help him against you and he can just flash and combo half your hp, avoid fighting him near laners, try to go to his jungle, only if hes low hp fight him cause his laners can react, try to cheese him and steal his camp, if u actually spot him low on health and steal a couple of camps he's doomed, also if you are faster than him on blue form combo, you can one shot him .
The toughest matchup you can ever play, rengar can just constantly invade you, jump you through walls from vision and stopping your e, he counters all your mobility cause of his jumps, he outbursts you hard no matter how behind he is, the only way to win him, is to avoid him pre 6, out clearing him, trying to steal his raptors or golumns, since his clear on them is bad, and try to play around your team against him, once you get your form and your a little bit ahead, you will need heal reduction for his w, after that you'll be able to 1v1 him, but later on you might struggle with his ult ambush, his kit is better than your on ambush, so id advice an early ga or a ninja tabi
easy, you can outclear her , she's weak early, you can easily catch her low hp and fight her in jungle, constantly steal her camps, cheese her raptors red, counter gank her with your lead, after you get form, midgame you can legit one shot her.
his clear is fine, his mobility is fine, just avoid getting caught by him , try to steal his camps and not fight him early, play around your team and try to get early form, then you can do something to him, you will also eventually outscale him with your clear.
a really easy matchup, his clear sucks, he loses fair amount of health on camps, you can always invade him, and kill him pre 3 so he has no escape, also they go ignite, basically early lv 1/2/3 invades are advised, you can also kill him on his blue, sometimes you can just go for camp and orbs from him . once you get blue form you can ambush him and ult him to avoid clone and hes dead
you can invade her early, she loses alot of hp, you have better dps than her and better clear invade her pre 6 and constantly fight her and steal her camps and you'll be fine
his clear and sustain are fair, he can be really annoying to invade, so try to just steal his camps unless hes really low on jungle or your team is around with priority, once you get items and he goes tanky, you out damage him and can look for a fight or counter gank, also once you get form you can outscale him, your clear is better , but avoid getting caught from his ult.
you outclear him, he can't catch you through walls, just avoid 1v1's try to couner gank him or just fight him on low health, go for clearing and you'll outscale him, try to get early form and heal reduction and you'll be fine .
he can be annoying, but you have more mobility and clear, so go for outclearing and play around your team, don't 1v1 him unless you're ahead in lvl and gold, also not full hp 1 on 1, you'll outscale once you get form
you outclear her , you cant fight her early though, and she might out gank you, so avoid her and ward for your team and ping them, also try to spot her on map cause its really helpful, if she doesn't get fed, and you get your form, she's doomed.
he has a fine clear and sustain, but you still outclear him , but his burst and lockdown is huge, avoid him at all costs, don't fight him unless your with someone , sometimes avoid him even if he's really low, you really need a huge lead to be able to fight him , once you get heal reduction and form , its possible.
he is indeed strong early, but his clear is trash, his ganks can be easily avoided if you spot him on map, just counter jungle him, avoid fighting, get heal reduction form, he'll eventually be useless
he has a bad clear, you can invade him, 1v1 him in jungle if he's low, he doesn't have much sustain so you should be fine, you have better ganking kit .
his clear and sustain are fine, but yours is better, just avoid 1v1 earlys, cause he has so much burst , dps, lockdown , you can do something with lead or team or blue form against him.
Easy, you outclear him, you can 1v1 him early in jungle, spot him on map , ping your team, counter gank him , get ahea d of him, get mortal reminder and form and you're fine .
really bad, 0 early impact and damage, you will have 0 prio mid for invades or scuttles
Usually has no priority on lane, playing safe, will just leave you play the game solo and scale, not the best to play with.
really bad, 0 early impact, usually farming only , not the best synergy with kayn, late for follows, 0 dmg early, 0 cc
one of the nicest synergies out there for that you can engage with 700 ms on them or press ult into 5 man with her ult and she will deal them so much.
little to no synergy, she can roam but she'll probably die half of the time.
fine synergy, he will keep laners busy cause of his wave clear + he will have prio most of the time, issue is he will have most of his lead in lane, might not get out of it
A fine synergy, not the best for follows, good for dives, but you have your ult anyways, leona or nautilus would be better.
good early champ, has follow and prio
good early game to follow , roams alot
Any aggressive midlane with wave clear + cc and follow up is good with kayn early. since kayn invades alot
Having akali on mid and on team is really helpful for kayn, for that you both can deal mixed damage when you run blue kayn + she has prio most of the time on mid .
really nice support synergy, will roam alot with you, got cc heal dmg everything needed
good for follows
Reallly huge 2v8 synergy, her roaming on you after 6 with the extra mobility, healing, and damage is really powerful. One of the best synergies out there,
Great synergy, always helpful on risky plays, can ult when you're inside ult, making 2 players easily reach their carries , guaranteed tuant too.
like any other champion with cc lockdown, lissandra is one of the best with blue kayn, she can lock someone down and you'll easily full combo burst them
His aoe cc engage gives blue kayn potential to one shot 5 man.
A very huge synergy, good early follow, has prio in lane cause of his wave clear, can cc lock a target for 2 seconds, can ult you when you flank backline.
Really a great support or mid to play with, can make shot calls and keep on snawballing early .
Huge damage, follow, cc lockdown, and early prio in lane.
A very nice synergy, where you can permanently dive the laner, you can also use his hard engage to flash on people and combo them, especially if he hits aoe ult.
Good follow up for scuts, got huge burst and nice cc
Champion Build Guide
Kayn, The Shadow Reaper
Welcome! I am Dark Aura, known as the best Blue Kayn world. Reached Challenger 1140 LP last season with only Blue Kayn. Many people also know me as DarkAuraLOL from my Tiwtch stream. Make sure to check it out to get the most on how to play Blue Kayn. Feel free to ask me questions on my stream, and I'll answer everything I can. Make sure to drop a follow if you like the stream. I am doing this guide to prove to people you can easily play and climb with only Blue Kayn, and that you don't need to be playing against ranged champions to play it, you can even play it against 4 tanks and carry. Hope my guide teaches you all that needs to be known. Enjoy!
+ Blue is a better form for carrying in solo Q than Red.|
+ Perfect to abuse lead and get ahead.
+ Good against squishy teams with no cc.
+ Great in team fights for AOE damage.
+ Can easily flank and go for picks.
+ Blue Kayn has high mobility.
Blue Kayn is really good in solo Q cause you play with randoms, where if you get a lead on Blue Kayn can make you literally 1v9 compared to Red Kayn, where in Red Kayn's case, you kind of depend on team, for that you are mostly front lining for them and surviving with the healing, while Blue Kayn can literally one shot 3 people in a team fight, and go for picks off guard. Blue Kayn has high mobility and more damage which allow him to power farm harder than Red Kayn, as well as having more impact around the map.
- Blue Kayn is not very great into melee fighters/assassins that can outclass him early game, also make his form late.|
- Can be very weak into tanky matchups if he doesn't get ahead, for that he will lack damage.
- Late game when everyone reaches full build, Blue Kayn can be completely useless when the backline build defenses like zhonyas/Guardian Angel.
- Is bad into stuns/knockups, where you can get cc'd on sight and instantly die cause you are squishy.
- Requires more skill, if you miss one ability you can be completely useless.
Blue Kayn can suffer into matchups that having high damage and a lot of damage per second early game, where they can easily fight him in the jungle or counter gank his ganks. Playing into melee champions also can delay your form, which is of course going to hold you back a bit. In certain matchups, if you fall behind early, and they stack armor, you're pretty much gonna deal zero damage. There is a huge struggle against champions with lock down cc like Malzahar for example, where you might try to engage with e ( Shadow Step, and the moment you show he will lock you down with Nether Grasp and you'll instantly die. Additionally, Blue Kayn struggles into late game defensive items like Zhonya's Hourglass and Guardian Angel, where you will not be able to one shot the carries and you'll be denied. Lastly, Blue Kayn requires a lot of mechanics and skills to be played, so if you missplay one time, it could make your champion completely useless, you have to be clean.
- The Darkin Scythe is the (passive), that gives you Blue orbs upon hitting ranged enemy champions till you fill the bar, then you get your Blue form, or you just get it 4 minutes after getting Red form if you couldn't get Blue at first.
- Try using an auto attack before using your Reaping Slash (Q) to cancel next auto attack time.
- Always keep your Blade's Reach (W) until you can read enemy's movements, never use it at the beginning of a gank, they might be a free kill that you might miss, so just walk up to them, if they Flash, then you can react with Reaping Slash (Q), or just Flash to them, or even use Blade's Reach (W) to them on full range after they Flash, but if you instantly use Blade's Reach(W) they might Flash it and the delay on Blade's Reach (W)'s activation will make them escape you easily. Additionally, you can always use an auto attack before Blade's Reach (W) to make you cancel the next auto attack time.
- Always use your Shadow Step (E) while farming jungle to heal up, also make sure you use it to reach camps faster, for faster clear. Another way of using Shadow Step (E) is by keep it up when invading enemy's camps or even fighting in the jungle to escape. Your Shadow Step (E) gets cut off if you get hit by an enemy champion auto attacks or spells, it gives you 1.5 seconds to force you out of the nearest position in the wall you are in, make sure you dodge enemy stuff and avoid it while inside a wall. Another thing, you can use your abilities in walls, and use Reaping Slash (Q) from wall to wall to make your mobility even longer. You can even hit camps with Reaping Slash (Q) and Blade's Reach (W) while in wall without getting your Shadow Step (E) stopped. Lastly, if you get hit in combat before using Shadow Step (E), you will need to wait 3 seconds before you can use it fully, else if you use it, it will only last 1.5 seconds.
- Finally, your ultimate Umbral Trespass (R) is used in many ways, you can use it to deal more damage at any phase of the game, you can also use it to chase someone after a flash you predicted from him. Another usage for Umbral Trespass (R) is escaping, you can always use it to stay 3 seconds untargettable till your team reaches, or by waiting 3 seconds for your cooldown on Reaping Slash (Q) and Shadow Step (E) so you can escape to the nearest terrain or (Q) Reaping Slash to the other wall.
- The Darkin Scythe: Shadow Assassin (passive) is where you collected the Blue orbs which made you transform to the The Darkin Scythe: Shadow Assassin (passive) form, or if you waited it after getting Red form. Now, The Darkin Scythe: Shadow Assassin (passive) gives you some extra things on your abilities, firstly Kayn's basic attacks and abilities deal 12% - 44% on the first 3 seconds on combat, refreshing after 8 seconds out of combat with them or by using Umbral Trespass. Secondly your Blade's Reach: Shadow Assassin (W), gains 200 longer range. Thirdly your Shadow Step: Shadow Assassin (E), gives more movement speed, and has a lower fixated cooldown, being stable at 8. Lastly, your ultimate Umbral Trespass: Shadow Assassin (R) gains 200 additional range on casting, and re-casting Umbral Trespass: Shadow Assassin (R), also it resets the The Darkin Scythe: Shadow Assassin (passive), where you will deal a percentage of magical damage.
- Reaping Slash: Shadow Assassin (Q) stays the same on getting form, but, it's usage works different on the combo, make sure you use the fast Blade's Reach: Shadow Assassin (W) before using it for a faster AOE damage combo, since Blade's Reach: Shadow Assassin (W) no longer has a delay on cast upon getting Blue form.
- Your Blade's Reach: Shadow Assassin (W) Gains additional 200 range from the The Darkin Scythe: Shadow Assassin (passive) Blue form. Which helps you a lot for fast combos, whereas it also removes the delay upon casting, which make your combo's too fast and smooth, making it easy for you to have AOE damage in team fights.
- Shadow Step: Shadow Assassin (E) gives you more mobility than the basic Shadow Step, also it has a fixated cooldown on 8, which decreases upon buying cooldown, making you really fast, and giving you the ability to engage and re-engage at any point you want. Also the mobility gives you faster clear, more impact around the map, and faster engage combo, which will make the enemies not even able to react upon engaging.
- Finally, Umbral Trespass: Shadow Assassin (R), gains extra 200 range on usage to get into someone, and to get out of him as well. Also getting out of someone with Umbral Trespass: Shadow Assassin resets your The Darkin Scythe: Shadow Assassin (passive), which makes you deal a percentage of magic damage.
6 / 11 / 16
1 / 4 / 5 / 7 / 9
3 / 8 / 10 / 12 / 13
2 / 14 / 15 / 17 / 18
|Umbral Trespass (R) mostly, as a priority, cause as per usual, ults are the most important. Secondly, I'm maxing Reaping Slash (Q) over Blade's Reach (W) for that early game, you will be looking for more "Damage per second" rather than burst, cause you won't be able to one shot, so maxing Q will lower it's cooldown, which will make you stronger in longer fights early, also maxin Reaping Slash (Q) before Blade's reac (W) is better because you can having faster clear and pathing with it having lower cooldown. Thirdly, we are maxing Blade's Reach (W) for that it is your mid game source of damage, and compared to Shadow Step (E) it is better for that Shadow Step (E) is just for mobility and utility, while Blade's Reach (W) is your second source of damage early game, and your main source of damage mid-game, hence why Shadow Step is lastly maxed.|
Mobility boots is always the best choice, for that it works best with Umbral Trespass: Shadow Assassin (E) where it give you speed that synergizes together making you move at an unbelieveable speed around around the map, having fast clear and huge impact. Additionally Mobility Boots, works well with your combo, where with the mobility you can engage and assassinate faster to make them unable to react.
Plated Steelcaps are only built when you are building the fighter/tanks build into a full ad team comp. Only if you feel it's necessary depending on the sitaution!
Mercury's Treads are only built into tanky/magic damage comps where they have tanks that have a lot of CC and deal magic damage, or against heavy full magic damage. Only if you feel it's necessary depending on the sitaution!
Prowler's Claw is one of the two myhical items you will build, Prowler's Claw is built more than Eclipse, for that it's better against squishies, and it's more practical on assassins. You will want to build Prowler's Claw into squishy teams with no cc like knock ups, stuns, binds, etc. It works really well because of it's gap closing, and it makes it easier for you to hit your combo, and get some nice AOE damage.
Eclipse is usually the 2nd mythical item option, where it is best to build it into tanky/fighter team comps, where you feel you won't one shot them, and you will lack damage per second, then your best choice is to go for Eclipse.
Youmuu's Ghostblade is your Core third item including Mobility Boots where it's best with Prowler's Claw for it's maximum damage and lethality.
The collector is another core 3rd item including Mobility Boots, but you only go for it when you go for Eclipse on the fighter/tank build.
Chempunk Chainsword is an essential item in 90% of the games, cause of the amount of heals that are existing right now. If you are dealing with heavy healing, you can build it after your mythical item, or as 4th item including Mobility Boots, if you are dealing with a bit of healing, you can just buy executioner and continue it later on as last or before the last item.
Serylda's Grudge is defenitely a core item for mid/late game, depending on the situation, if you feel you are against tanks or a team that is stacking arrmor, try to go it 3rd item after boots, unless you need situational items before it, then you'd go for it as 4th item after boots. If you are dealing with a full squishy team with no arrmor, it's better to go for defensive damage items than Serylda's Grudge .
Serpent's Fang is a situational lethality item. Where you only go for it in cases where you are dealing with a lot of enemy shields. In that case, I would not go for Youmuu's Ghostblade as a second core, and I would go Serpent's Fang second. In some cases you will have to give up some items for others, like if I need Chempunk Chainsword and Serpent's Fang at the same time, I wouldn't go for Youmuu's Ghostblade cause I will have to prioritize situational items, and better core items, like Serylda's Grudge on mid game would be better than Youmuu's Ghostblade, and last item always go for Guardian Angel or some defensive item that's needed.
Guardian Angel is the best last item, and also the best defensive item you can buy, for that you usually go full ad, and any other defensive item won't be enough to make you survive as good as Guardian Angel. Some games though, like into full magic damage bursty team, you might want to go other last and defensive items like Maw of Malmortius.
Mercuriel scimitar is always nice to buy into a lot of enemy cc chain, or long cc duration champions like Malzahar and Lissandra, where buying [Quicksilver sash]] into mercuriel scimitar is essential, or else you will keep on constantly dying.
Maw Of Malmortius
Maw of Malmortius is only built when you are against almost a full AP team, or if you are dealing with a fed mage or two, where they are the only threat and they can literally one shot you.
Death's Dance is a situational item, where if you are playing into 5 AD champions, you can go it to be really tanky, but preferably buy it 5th or 6th item, alongside Plated Steelcaps to have tankier stats. This works even better if you are running the fighter/tanks build on kayn. A situational item.
Edge Of Night
Edge of Night is another situational item, built into champions with instant cc lock, or knock up, or knock away. Like for example: Nautilus Dredge Line Q, or Syndra's knock away Scatter the Weak. Where it counter such abilities against such enemy champions.
Black Cleaver is really good into tanky teams, or teams that are stacking arrmor, usually it's good 4th or 5th item, it's really situational though, in cases where you need a lot of penetration, or you're playing against like 3 tanks+.
Randuins's omen is built in rare cases, where enemy have like 3 critical strike champions, and you are playing the anti-fighters/tanks build, where you will want to be tanky a bit with sustain. Would be fine as a 5th or 6th item.
The murk wolves invade is the safest by far, and I personally use it a lot in higher elo, much more than the raptors invade, because in higher elo they always tend to ward raptors , cause they know the invade tactic, also it's riskier, so I'd rather take it safer, but in lower elo, like below Diamond 1, I feel you can abuse the raptors invade better. So, the wolves invade is simple, just walk to river, don't go in the river mid bush, cause you will get spotted, just use Reaping Slash (Q) from your raptors side, to the mid side bush that is near enemy murk wolves , (the 2 mid bushes on the sides, Q to the one that is on the side of the murk wolves you want to invade), after that, wait until 1:15, then walk and sweep mid river bush, into the bomb that is in front of murk wolves , take that bomb to the murk wolves , sneak take them, then max E Shadow Step (E) and try to steal enemy blue buff , if it's not taken, take it, if it's a fast clear champion, take care, he might've already finished it, so let's you are against an Ekko, he has a very slow clear, you will have time to finish murk wolves then Smite his blue buff . If you are against an Olaf on the other hand, you will probably not make it in time, so in case of dealing with an enemy with fast clear, after finishing murk wolves , go for using Reaping Slash (Q) into blue buff bush, then wait for him to make the gromp low HP, take it and get out with Shadow Step, cause he will probably be stronger than you if he is an Olaf.
Make sure you adapt, if you get spotted, adapt and start your nearest easiest camp, which is either raptors or wolves , sometimes you might die, or your team might invade, then that would change the circumstances, if you have a strong early, you can do a late red buff invade with your bot laners and mid lane, and start his botside red buff . If you had to start your raptors or wolves , then try to read his pathing and sneak an invade to the other side without showing on map. Another point is, make sure if your invade gets successful, it'll make reading enemy jungler's movements and pathing on map easy, make sure you track it to avoid him counter jungling you, and make sure you abuse easy matchups with tracking, like contesting two scuttle for lead.