Mobafire League of Legends Build Guides Mobafire League of Legends Build Guides

Kayn Build Guide by Holidayuniverse

Jungle diamond

[10.5] Kayn | The child is gone, the killer will remain

By Holidayuniverse | Updated on March 4, 2020
17 Votes
Did this guide help you? If so please give them a vote or leave a comment. You can even win prizes by doing so!

You must be logged in to comment. Please login or register.

I liked this Guide
I didn't like this Guide
Commenting is required to vote!

Thank You!

Your votes and comments encourage our guide authors to continue
creating helpful guides for the League of Legends community.

Runes: Darkin Rhaast

1 2
Legend: Tenacity
Coup de Grace

Taste of Blood
Ravenous Hunter

+9 Adaptive (5.4 AD or 9 AP)
+9 Adaptive (5.4 AD or 9 AP)
+6 Armor


Kayn Jungle
LoL Summoner Spell: Flash


LoL Summoner Spell: Smite


LeagueSpy Logo
Jungle Role
Ranked #19 in
Jungle Role
Win 52%
Get More Stats

Threats & Synergies

Threats Synergies
Extreme Major Even Minor Tiny
Show All
None Low Ok Strong Ideal
Extreme Threats
Ideal Synergies

Champion Build Guide

[10.5] Kayn | The child is gone, the killer will remain

By Holidayuniverse

I started playing league Season 2 but stopped playing because my computer was bad AF. Thats why i stopped playing in Season 2. I retuned to league Season 7. I made new account and got to lv 30. On the first placements i got Bronze 5 on flex and Bronze 1 solo/duo. I was kinda trolling bec i had no game knowledge and played things like Amumu or Poppy Support. I played only normal games for around 5 months and my game knowledge improved so well. I started to ward,look at minimap,etc. After struggeling i got out of bronze,but silver was literally same as bronze.When i got Silver 3 season 7 ended. Season 8 was the season of success for me. I did placements 6-4 and i got placed Silver 5. In the summer of Season 8 i went from Silver 4 to Silver 2 so quickly. Then i got to promos for Gold 5 (my aim for the season was gold)and i got so excited i love to play Jhin and i played Jhin in my Gold promos. Thats how i got to Gold 5. Thats a little bit of myself. As of 28/07/19 im Plat 3 in my main account.

Sometimes i stream. Follow me if u want:

You can pick Kayn in almost every game because of his flexibility . He can go tank if ur team needs one or assassin. U wont be able to pick him only if ur team doesnt have Ap champion. Kayn can be so effective in low ELO because in both forms he has so good damage output. In Rhaast (Red) form he has godlike sustain. U can 1v5 their team if ur fed and they dont have executioner's to reduce your healing or vayne to shred you down. Assassin form can be so effective due to its snowballing potential. If u get 2 kills in front of their jungle , u can invade him and kill him every time unless he is amumu or warwick. U can pretty much win the game before 25 min if u are snowballing and getting objectives well.


+ Ganks easy with his Shadow Step
+ Good Jungle Clear
+ Has Tank and Assassin form
+ Fits good in every team
+ Good sustain in Rhaast form
+ Can switch turret aggro with Umbral Trespass

Ganking with Kayn is so easy due to his Shadow Step active. It gives you 40% movement speed and while active u can walk through creeps and most important - walls. His Q Reaping Slash and his W Blade's Reach gives you better clear than most junglers and E Shadow Step gives you sustain and faster movement in your jungle. Kayn fits in almost every team compositions because of his passive The Darkin Scythe. His R Umbral Trespass is a good towerdiving tool because it resets the turret aggro.

- Weak when in regular form
- Executioner's Calling is so strong vs Darkin
- Mana hungry champion
- True damage is so strong vs Kayn
- If Shadow Assassin gets caught, he is most likely dead
- Has some so bad matchups in the jungle

Kayn has so bad early game while he is in his regular form. He can get 1v1'd by almost everyone at this point. On darkin form u dont want to see Executioner's Calling on enemy team. This item is just disgusting vs Darkin since it reduces his healing by 40%. Kayn is mana hungry especially late game with Darkin form when u need to spam abilities in order to survive. True damage dealers like Vayne are so good picks vs Kayn. Vayne's Silver Bolts deals percent health in true damage which is disgusting for Darkin .



  • Conqueror: With it, Kayn can sustain a lot more when stacked. Even more after the changes in preseason 10. Now it gives more sustain than dealing true damage and more AD with it scaling with every Conqueror stack. It helps a lot in early fights. Good especially for extended fights and long fights in the late game when u sustain like a god.
  • Triumph: This rune gives you percent health and mana when u participated or killed an enemy. It is pretty useful for the both forms late game and when ganking. With it u can sustain after ganking and go contest a dragon or rift herald. It also helps a LOT in skirmishes.
  • Legend: Tenacity: The tenacity is pretty useful since it lowers the CC duration for the late game when Darkin needs to spam abilities to stay alive. If enemy team has Leona for example or any other heavy CC champions this rune helps a lot.
  • Coup de Grace: The increased damage on champion who is on 40% health or less is pretty good since Kayn has 2 AOE abilities which can proc this rune multiple times on multiple champions. It is so good for both forms. I think it is so useful for Shadow Assassin, because u should overkill the enemy to secure a kill.

  • Taste of Blood: The healing from the rune helps with your sustain just like Conqueror , but like a worse version of it. It helps so much especially to his Darkin form that should sustain to stay alive and tank the damage for your team. The rune is pretty useful in both teamfights and skirmishes.
  • Ravenous Hunter: This rune is the best sustain rune after Conqueror. So it's pretty good on Kayn, because it heals you with percent damage you dealt to an enemy with abilities. Since Kayn is playing mostly with ablities its synergising super well with him.


  • Dark Harvest: With it, Shadow Assassin can oneshot much easier.If it has good stacks the oneshot on squishies is guaranteed. It can help to take down high priority targets much faster just like Master Yi. It resets its cooldown on every kill so u can oneshot everyone one by one or even multiple targets at one. Its synergising super well with absolute focus and sudden impact, since this runes give you even more damage.
  • Sudden Impact: This rune gives you lethality when u dash (Q) It helps with the assassination of someone. This help so much in the assassination of high priority targets and obviously every threat to your team. Since it Lethality lowers the armor of enemies it is so good on Shadow Assassin.
  • Eyeball Collection: The Eyeball stacks are pretty useful, because they give 0.6 AD when u take down an enemy. It stacks up to 12 AD. As every other rune on Shadow Assassin form it is connected with assasination and taking down priority enemies.
  • Relentless Hunter: It gives you out of combat movement speed.It can be pretty useful when chasing an enemy with Shadow Assassin empowered Shadow Step or simply moving to camps, objectives, and even ganking. With the bonus move speed from it, you can oneshot an enemy even without it seeing you.

  • Absolute Focus: This rune gives u bonus AD up to 18 while above 70% health.It can be pretty useful for invades and camping enemies in bushes. -_- Since you are Assassin and you are oneshotting someone or being killed, you should every time assasinate someone. This rune does the perfect job for you.
  • Gathering Storm: Since Shadow Assassin Kayn is falling off late game as every other assassin he needs more AD to assassinate more easily and eventually escape from the fights. The reason that he needs this rune is that everyone is getting armor per level. Eventually if everyone is already Level 18 he doesnt get more armor then that, but u do get AD from this rune.

The Darkin Scythe

Kayn wields an ancient, sentient weapon that battles with him for control. Dealing damage against champions causes them to drops orbs that are automatically collected upon leaving combat, filling a bar above Kayn's portrait.

Once the bar is full, he can choose to either be overwhelmed by Rhaast or expel him to become the Shadow Assassin, based on whether he has damaged more melee or ranged champions, respectively. Once primed, the other option becomes available after 4 minutes. Kayn can continue collecting orbs for his other form to reduce the wait time.

The transformation can only be performed by interacting with Kayn's portrait while on the summoning platform, permanently changing his abilities.

Reaping Slash

Kayn dashes forward, dealing 60 / 80 / 100 / 120 / 140 (+ 0.65 per bonus attack damage) physical damage to all enemies he passes through before flourishing his scythe, dealing the same damage again to surrounding enemies.

Both instances of Reaping Slash deal 55 bonus damage against monsters.

Blade's Reach

After a short delay in which he can't perform any other actions, Kayn performs an upwards sweep with his scythe, dealing 90 / 135 / 180 / 225 / 270 (+ 1.3 per bonus attack damage) physical damage to all enemies in a line and slowing them by 60%, decaying over 1.5 seconds.

Shadow Assassin Blade's Reach

Blade's Reach's range is increased by 200. Additionally, Kayn conjures a living shadow at the casting position to perform Blade's Reach in his stead, allowing Kayn to perform other actions.

Darkin Blade's Reach

Blade's Reach Airborne icon knocks up enemies for 1 second.

Shadow Step

Kayn gains 40% bonus movement speed, is ghosted and can ignore terrain collision for 1.5 seconds. Immobilizing effects will interrupt Shadow Step.

Kayn heals himself by 100 / 115 / 130 / 145 / 160 (+ 0.4 per bonus attack damage) upon moving through terrain for the first time and, if he's not in combat with enemy champions, Shadow Step's duration is increased to 7 / 7.5 / 8 / 8.5 / 9 seconds.

Entering combat with a champion after the effect is enhanced reduces the remaining duration to 1.5 seconds.

Shadow Assassin Shadow Step

Shadow Step's cooldown is reduced to 8 seconds at all ranks. Casting Shadow Step removes slows and makes Kayn immune to them for the duration. Additionally, entering terrain will increase the bonus movement speed to 80% for the remaining duration.

Umbral Trespass

Passive: Kayn's basic attacks and abilities mark enemy champions for a few seconds.

Active: Kayn can activate Umbral Trespass to infest a marked enemy champion for up to 2.5 seconds, revealing them and becoming untargetable for the duration. Reactivating Umbral Trespass ends the effect early.

Upon reactivation or at the end of the duration, Kayn wrenches free from their body in the cursor's direction, dealing 150 / 250 / 350 (+ 1.75 per bonus attack damage) physical damage to the target.

Shadow Assassin Umbral Trespass

Umbral Trespass gains up to 200 bonus cast range and emerge range. Additionally, emerging will reset The Darkin Scythe's cooldown.

Darkin Umbral Trespass

Umbral Trespass is modified to deal 10% (+ 13% per 100 bonus AD) of target's maximum health physical damage, and heals him for 70% of the pre-mitigation damage

ROUTE 1: Red with leash -> Raptors -> Wolves -> Blue -> Gromp -> Scuttle

ROUTE 2: Raptors -> Red -> Wolves -> Blue -> Gromp -> Scuttle

Cheese Route: Enemy Raptors -> Level up E and if you are fast enough smite his red -> get back to your side of the jungle (depending on blue or red side)

Vertical Jungling : Red -> Krugs -> Raptors (optional) -> Scuttle -> Enemy Blue -> Enemy Gromp -> Enemy Wolves

August 3rd: Finished!
April 3rd: Started!
League of Legends Build Guide Author Holidayuniverse
Holidayuniverse Kayn Guide
[10.5] Kayn | The child is gone, the killer will remain
Help Support Our Growing Community

MOBAFire is a community that lives to help every LoL player take their game to the next level by having open access to all our tools and resources. Please consider supporting us by whitelisting us in your ad blocker!

Want to support MOBAFire with an ad-free experience? You can support us ad-free for less than $1 a month!

Go Ad-Free