Cho'Gath Build Guide by Fan22
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Choose Champion Build:
Top lane Cho'Gath
Runes: Tank Runes #1
+10% Attack Speed
+9 Adaptive (5.4 AD or 9 AP)
+10% Attack Speed
+9 Adaptive (5.4 AD or 9 AP)
+9 Adaptive (5.4 AD or 9 AP)
+9 Adaptive (5.4 AD or 9 AP)
+9 Adaptive (5.4 AD or 9 AP)
++8 ability haste
+9 Adaptive (5.4 AD or 9 AP)
Ability Order Tank skills leveling
Threats & Synergies
This lane it's a nightmare, his true damage and Bleed Hurta Chogath a lot. This lane it's very complicate, dont try to fight him early, only if you are really sure you can kill him or in the first levels (level 1-4). In this matchup i reccomend going some Ap with a dorans ring and poking him all you can, also having extra ap and mana let's you farm safely with Q, thus having less risk of diying against darius. Remember to you can use your Q or W to disengage after he uses E or if he is gonna use R. The W silence doesn't let darius use Q and R, wich are important abilities.
Nasus can be easy early game since Chos sustain can match nasus sustain, and with ignite and your ultimate you can kill him very easily. However Nasus can be really dangerous lategame or if they gank you and he gets ahead. If you farm and zone him out of his minions and help your team you should be fine.
Well, you dont have to think a lot to know why Sett its a direct counter to chogath. His Q has % max Hp damage, his W its true damage, and His R AoE damage scales off from the enemy Additional HP, meaning that if he Ults Uou into your team you are doomed. Early game poke him whit Q when he tries to farm and be careful since his W shield can prevent him from diying to your Ultimate and has good damage early game. Late game position yourself away from him and your team since Sett gets a free "R Penta" if you do not do. I reccomend banning him since its really hard to deal with him even when you are ahead because the way Sett scales.
Either Top or bot This Cancer champ whill make your life a living hell whit her W max hp True Damage. If you manage eat her it is over, most of the time. If she goes top, go TP and farm with Q and dont push the lane, ask your jungler to gank. Going glacial augment and righteous glory helps you and your team to kill her. If you go tank Righteous glory MS and Slow helps you to easily Oneshot her with R.
Aphelios doesnt have much mobility so you can Kill him whit R in a teamfight. But if he is ahead or has a good support to peel him its gonna be really difficult to deal with him.
Amumu its a strange matchup and mostly depends on what he is building and what team is winning. If you Eat with quickly whit R he shouldn be a problem in TF, but in most cases he can be really dangerous, and has true damage whit his passive. Going merc treads helps to not get CC´ed and use your abilities to disrupt him. Amumu also becomes a higer threath hen he gets a liandrys, since that items counters you.
Theres no much you can do against mundo. His Q scales from your Hp and his W reduces the duration from your W and gives him more MR. But from mid-late game and if you have grievous wounds he should be easy to kill whit R.
Eat fight.. Very, funny? nah go play ranked and win ;)
Her true damage and mobility whill make your early game hell, going tank can mitigate her pression over you, but going glacial helps to kite her and poke her since she whill zone you out and wont let you farm. Remember to use your Q or W to evade her from casting Q and the wall-jump ability.
Her insane mobility, invisibility, and the capacity to 100-0 your Backline and adc makes her a deadly threath, and hard to deal in evrey phase of the game. The worst part its that her mobility makes landing Q and even your W difficult, and her invisibility shroud doesn't let tou cast R on her,. Very annoying matchup, depends of the player since for me its a skill matchup since your Silence can make her useless for a few seconds and deniying her mobility spells. Early game go doransh shield, she will try to poke you with q, but you should be fine, since Cho has a lot of sustain.
Even if Kog'maw was Cho'Gath friend in the void, he actuallly can kill you in seconds. His W not only has extra range, but also it deals a percentague of your max HP as magic damage. Lategame he can melt you really easy with his On-hit items. Against Kog i recommend going MR and items that lets you engage and Eat him, such as Righteous Glory, Deadmans, Glacial items, etc..
Ashe doesnt have mobility and its Easy to kill whit your Full combo and R, but her constant slows makes it impossible to be able to do that. Against ashe going glacial can be a good idea, also going randuins omen helps not only whit a slow, but also whit the reduced crit damage which reduces her slows.
Since sylas its insane in Mid-late game and can heal like crazy, he an be a big threat even when behind, but things get worse, since he can steal your R and also Get fre HP like us. Honestly him and Sett are some of the better bans you have. If you end up agaisnt him either Mid or top, i reccomend going thornmail or morellonomicon and getting magic resistance, your W and R can shutdown sylas easily.
Jax not onyl has good mobility, but also has a lot of ways to counter you. First, his Q jump makes landing Q impossible, second his E not only stuns you, but also makes your E Useless. and his R makes him deal magic damage and get resistance. However you can still use your W and his R extra resistances dont help him to reduce Your R damage. Against jax i reccomend maxing W and spamming it when he gets close, and poking him if you can or have mana, but dont spam Q and just farm. Dont fight him unless you have a teamamte o help you or you have 1 or 2 items a he is Not feed.
Volibear is very tought early game, Be it Jg or top. If he is Top poke him whit Q and eat him if he dosnt have his shield up. Be careful since his R desactivates Turrets and it lets you vulnerable to a free dive with the enemy jungler.
Rammus its an AD counter, and you not only deal Magic damage, but also TRUE damage. 90% of the time you should be fine against rammus.
He will Melt you like in seconds. The only Counter its to get a thornmail. Use your R and focus him in TF. remember to use your W to cancel his Q and W channeling.
Early game its a nightmare, and late game it still is because of his R mx Hp damage. If you dont feed him and get a thornmail you should be fine lategame.
Shen W can cancel your E AA, but aside from that he is not really difficult. You can cancel his R whit your Q or W. If you poke him enough and hit 6 you should bea ble to kill, if not, then do not give him more kills or lategame its going to be difficult, or impossible if he peels the backline.
Kindred its mostly a skill matchup. You can prevent her from using R using your Q or your W silence, but if she uses her R you cannot Eat her whit your ultimate, and she can kite and dodge your Q super easy.
You completely counter malphite beacuse he is an AD counter, but you have magic and True damage, and he has relatively low mobility. The problem its that LateGame, either tank or ap, his ultimate can turn Cho´gaths Win into a shaming loss. So be careful lategame against him.
Velkoz also has true damage in his R, and if he has some items he can kill you dont matter how tank you are. But, because he has no mobility and depends of his skills and a zhonyas, You can use your Q + W combo to oneshot him. Remember that your W completely denegates vel´koz and cancels his R channeling, your Q also cancels it.
She can CC you a make you a free kill, if you are agaisnt her jsut be careful about ganks and Tower dives and alte game you should be fine.
Early game this little monk whill can destroy you and put you really behind. If he is ahead try to eat him hen he dives your backline or tries to to an insec, and remember that your W silence makes lee not be able to dash and use Q, this can be very important in a teamfight or a fight
Whit some armor items trynda isn't a big problem, but whit a BoTRK and other items he can still kill you no matter how much armor you get and splitpush. Early game try to farm and dont be in your tower with low hp if he has R, since he can dive towers very easy and you don't have any escape tool outside of Flash. Remember that he can cast R even if he is under the effect of your Q and W. A little tip it's that, using your R early in a Fight against trynd can force him to use R more quickly, this can be good if your jungler ganks so that he is bursted sooner and killed soone, since the more time you take to kill him its probable that trynd can turn around the fight.
Red kayn destroys you and Blue kayn destroys your backline, its complicated to deal whit him. I reccomend using your Ult on him since its true damage and at any point of the game That can make Kayn less of a threat.
Kayle scales Really hard and can melt you after getting her first item, or after "evolving" with her passive, when she gets full build you become an adc in her eyes, so be careful. Early game poke her and try to kill her whit R, having ignite and GLP helps to kill her more easily and abuse her weak early game, having junglers help also ensures to let her behind enough to win lategame. The best Trick against Kayle its to use your R when she is CC'ed with your W or Q, since then she cannot become inmortal casting her Ult. Lategame you can still do this, you can also Ult sooner so that she uses her R earlier and becomes less usefull in a fight.
Morgana shield makes your already dodgeable Q even more useless, it also block your other abilities. Not only that, but also her insane CC and damage can be a pain mid-lategame, and it makes impossible for Cho to Eat the backline. The best way to deal whit her its to get Tenacity and focus her before she casts Q or R. Also remember that morgana most of the time will eb in the middle of the fight, if she does use that as an opportunity to CC her and hopefully kill her. If she has zhonyas its really hard for you to do anything to her and the adc, try to play for or with your team.
Trundles R its complete as* as Cho'gath. It steals a part from your Max HP and steals your armor and MR. However you can Burst him with the true damage from your ultimate and with a morello or thornmail you deny his healings. If going tank get a thornmail, if he is going full tank/support just adapt to what you need in that game.
Lategame he can be a pain to deal against and he can easy dodge your Q. i reccomend Slowing him with active items and your E and using your W to deny him from using abilities and then finish him off with R. Alway try to eat him in fights and focus him, unless theres a bigger threat in the enemy team such as a feed Adc.
Fiora alongside Vayne are thw worst champs to face as Chogath. Fiora has insane healings, true damage based on max health, a lot of mobility and with riposte (W) she can ignore one of your abilities and stun you if it was a CC ability (like your Q). Against fiora Max E and get armor and bramble vest, i reccomend bramble vest after your 1st item. Against fiora try to make short trades in early gmae with Grasp and E, remember to not push the lane and don't use Q or W too often, especially Q. Fiora not only deals true damage based on %max HP , but she also has her Riposte, wich it's the worst of all fiora's abilitys for Cho. Riposte can stun you for 2s if the ability blocked was a hard CC, wich means that using Q it's only going to make you easier to kill, ripsote can also block R, remember this since it can make a huge difference. Use your W silence to Q or R fiora, wich ´prevgentes her form using her dash (Q) and riposte (W).
Samira can easily dodge your Q and even W, and even if she gets to meele range most of the time she can delete you. Late game try to pick her with Q + W + R, 80% of the times that should give your team a good chance to kill her. If for some reason she goes top or mid and you have to face her try to poke/burst her and dont make extended trades, going tank and purchasing a bramble vest helps to deny her healings, sinc eits one of the Core aspects of Samira.
Has a shi* ton of mobility and even %max hp damage, if you dont build a randuins or a thornmail and some MR items, he is gonna destroy you. Once you get a bramble vest and an item like frozen heart or randuins omen you should be able to kill him or to give your team a chance to kill him. your silence its really good since yone spams Q and uses a lot his abilities. and since he doesnt get Hp items (most of the time) in late game your R can actually delete him pretty fast.
Your passive gives you insane sustain, that combined with second wind and dorans shield makes GP poke almost useless, early game poke him and farm as much as you can. After getting tanky enough he should not be a problem for Cho. The worst part of GP for cho its his orange, wich removes CC and heals him, even still you should be fine since you can beat him with grasp and E if he gets to meele rangue.
Graves has good mobility and a lot of damage, and his W which nearsights makes landin your abilities really difficult. In late game try to engage on him and use your W to prevente him from using his mobility spells and others. if you are going Glacial hitting Q against graves should be a lot easier.
[Top] Lucian top its generally picked because he scales hard and in top he free scales and abuses most bruisers and tanks. Altough in early game he it's very dangerous he isnt complicated if you play well. Go dorans shield to sustain yourself and farm using the bushes to avoid unnecessary harrass, be careful since lucian will use his E to dodge your Q, thats why you should use W first to silence him. If he pushes too much or doens't have vision ping your jungler, your CC should be enough to kill lucian with some help. Rushing armor its very important to deal with him, after getting some items he shouldn't be too diffuclt mid game, be careful late game. If he is the Adc most of the responsibility of not feeding him goes to your botlane, lategame if he doesn't get peel you can kill him with R and some AA. Randuins, thornmail and plated steelcaps are good items against him.
Runes: HoB page
+10% Attack Speed
+9 Adaptive (5.4 AD or 9 AP)
+10% Attack Speed
+10% Attack Speed
+9 Adaptive (5.4 AD or 9 AP)
Champion Build Guide
Who i am? Im Fan22 a standard player who plays tanks and mages principaly, i play on the LAS server, aside from that i don't have lots of achievements on league.
I also play rankeds and i Mainly use: Jax, Nasus, Singed, Maokai(duh), Malphite, Tryndamere, Cho'Gath and Blitzcrank.
Remember that English it's not my main language so there can be some ortography errors, if you see one please comment it to improve this guide! :D
Aside from that theres not much left to say from me, lets see Cho gath devouring things!
+Easy to pick up
+Good sustain with Carnivore
+Can Oneshot squishys just with R going Full Tank
+Can be usefull even when behind, thanks to his Ultimate giving additional Health
+Insane Oneshots if you go Full AP
+Very versatile on builds and runes, can go almost any item!
+Good CC, and has a silence
+Your R Feast deals True damage and gives additional HP
+You can Adapt to whatever your team needs
+Late game you are (almost) unkillable with 4K of health, or even more!
-Needs Items for being useful, and some to time to Scale and get Feast Stacks
-You relie on your team when going Tank.
-Struggles against true damague and armor & magic penetration
-You are Countered by % Max Hp damage
-It's easiliy kited
-Q it's easy to dodge
-Inmobile without a Turbo Chemtank, Dead Man's Plate or a Force of Nature
-Weak in the early game and when extremely behind or without much Feast stacks.
Cho'Gath its a really good pick, either as a Tank or as an AP mage or AP bruiser. Your
R gives you good damage and the ability to have 3k or 4k of HP with just 1 or 2 items, making you ultra hard to kill. I think that Cho'Gath Kit it's very fun to use and his versatility makes him good in any situation and gives lots of experimentation value with builds.
He is also not really complicated to play (wich can be very punishing in High Elo).
Cho'Gath not only can OneShot people going full tank just using R, but he also provides lots of CC with Q, W, and a slow with % Max hp damage on his E, and that also paired up whit a high sustain passive.
Tips: Chos passive gives him a lot of sustain in lane, and even in late game.
Carnivore can be used even in turrets and other "living" things like Malzahar void creatures.
for 1 second and receive 80 - 300 (+100% of ability power) magic damage, and have their movement speed slowed by 60% for 1.5 seconds after the rupture.
Tips: This ability is good for poking and disengaging, this is your main damage dealing ability when going AP Cho'Gath, remember to use Rupture to get into an enemies meele range and Oneshot him with the W + E + R combo.
Rupture can also be used to cancel Channelings and TP, and also Shen Ult, and since it is an airborne it means that it cannot be reduced by tenacity or purified with cleanse, making it a powerful CC tool when it hits.
W Feral Scream
75 - 275 (+70% of ability power) magic damage.
Tips: This ability can cancel channelings, similar to your Q.
Feral Scream it's a really good ability, not only beacuse it silences but it also its hard to dodge and deals a Lot of damage, especially when going AP.
Against high moblity champions in lane (when going AP) we should max either W first since Q it's easily dodgeable.
E Vorpal Spikes
Vorpal Spikes resets Cho'Gath's autoattack timer.
Tips: As the description says, this ability not only deals a lot of the enemys max HP as magic damage, but also it resets your AA timer, meaning you can autoattack and cast E and land another AA for additional damage, this litte trick can enhance your damage a lot, and it combines with Hail of Blades, wich lets you apply your Vorpal Spikes much faster.
Against non-champion units (Dragon, Herald, Baron, Pets, Monsters and Minions) the base damage it's increased to 1000.
If the target is killed with Feast, Cho'Gath grows, gaining 80 / 120 / 160 extra health.
Each stack of Feast gives Cho'Gath 4.9 / 6.2 / 7.5 attack range, up to a maximum of 49 / 62 / 75 bonus range and additional size.
Cho'Gath can only gain 6 stacks of Feast from minions and non-epic monsters, but Feast can stack infinitely on Champions, Dragons, and Epic Monsters.
Tips: This amazing ability deals true damage based on a base quantity + your AP and extra HP, if you kill someone with this ability it also gives Additional Health.
Always try to preserve your Ultimate when fighting for objectives since it deals 1000 additional true damage to objectives, plus your AP and extra HP.
Meaning that you can secure a dragon or a baron really easy, this is why having Tp its really useful, so that you can TP bot and help in a Dragon fight and prevent it from being stealed.
A little detail about Feast it's that all it's effects are upgraded when we level it (on levels 6/11/16 ), for example the quantity of HP you gain from feast stacks, the additional Attack range, size, and true damage.
First of all, Items, especially on a Tank, have to be adapted every game, for example: Thornmail Force of Nature or Knight's Vow are items that you don't build every game, but when the opportunity shows up they are super gold efficient for you.
So don't take all i say in this guide literally, and always adapt your builds to what you think suits better your playstyle or way to play better!
The second thing it's that as Cho'Gath you will always want items that have HP, movement speed, CDR and resistances (Armor and MR).
But, from all stats, Health its the best one since most of your items, Grasp of the Undying and your ultimate Feast scales with Health. When you have enough HP you should look to buy items that give more resistance or utility.
Frostfire gauntlet synergizes perfeclty with Cho'Gath.
It gives more armor and less MR, Health, and 15% ability haste.
It also has Bami's Cinder passive, and another especial passive.
The passive of the item makes Cho'Gath's next Autoattack create a field of ice that slows enemies inside for 30% (+4% per 1000 health) fpr 1.5 seconds.
The mythic passive gives you 100 health and 6% increased size for every legendary item completed.
This is super good for Cho'Gath since his whole Kit revolves around health and size, and the slow, that aso scales with HP, it's good for not getting kited once you get into an enemies melee range.
Sunfire Aegis it's another good option option for Cho'Gath, giving you more general damage, especially in long fights.
It gives decent armor and MR, Health, and 15% ability haste.
It also has Bami's Cinder passive.
It has another passive that has a direct synergy with Bami's Cinder.
The passive gives Stacks for every second you deal damage with Bami's Cinder to an enemy Champion or Epic monster, every Stacks increases subsequent damage from Bami's Cinder (inmolate) for 12%, up to a maximum of 6 Stacks.
At maximum Stacks your AA's explode around you dealing inmolate damage to nearby enemies for 3 seconds.
In short, this means the burn passive (Inmolate) will deal additional damage the longer you fight with an enemy, and giving you, at maximum stacks, additional damage on your attacks.
And since Cho tends to have a lot HP, and inmolate also scales with HP, the burn can deal a lot of damage just going tank.
This item it's good into a teamcomp that likes extended or sustained fights, like: Katarina, Sett, Sylas,
Skarner, Jax, Yone, Kayn, etc...
The mythic passive gives you 5% of ability haste for every legendary item completed. This is useful to use your abilities more often, and having on mind all the CC Cho'Gath has, ability haste (CDR) it's pretty useful.
Steelcaps gives some armor and reduces the damage from incoming autoattacks by 12%, this are higly recommended against a msotly AD team or against champs that relie on AA, like:
Lucian, Jinx, Jax, Tryndamere, Sett, etc..
Mercury treads gives some MR and Tenacity.
Merc's are higly recommended against a mostly AP team or against champs with heavy CC, like:
Cho'Gath(ironically), Maokai, Brand, Morgana, Ryze, Thresh, Leona etc..
Altough they give MR the main reason for getting Mercury tread's it's because of the free tenacity, on Cho'Gath tenacity it's incredibly powerful because you are really inmobile and getting CC'ed constantly let's you useles.
Thornmail its a good tank item that gives armor and HP, its passive causes enemies that attack us to receive 10 (+ 10% of our armor) magic damage and reduces their healings by 40% for 2 seconds, in addition, immobilize a champion It will reduce their healings by 60% for 2 seconds.
This item its technically situational, but due to the fact that there are many champions with healings, or that depend on auto attacks, and the fact that it works very well in a super tank like Cho'Gath, makes it a very common item on him.
It's mandatory against a mostly full AD team.
Force of Nature
Force of nature it's a really good new MR item that gives Health, 60 MR and 6% movement speed. It works on Cho'Gath very well even if there isn't a Cassiopeia or Ryze in the enemy team, bacuse of the high MR it provides and because of it's passive.
The passive gives you a MR and movement speed increase for every stack you have, you gain stacks when taking damage by any (unique) ability. For a maximum of 30 movement speed and 20 MR.
I like more Force of Nature than Abyssal Mask beacuse on Cho'Gath its hard to prock Abyssal Mask passive, and because this item gives more MR and some movement speed, wich helps with Cho'Gath mobility problems.
Randuins gives Armor, Health and 10% Ability haste.
This items passive reduces incoming damage from AA by 5 per 1000 health, capped at a maximum 40% of the attack's damage of the enemy.
And the active slows nearby enemies by 99% for 0.25 seconds and reduce their attack damage by 10% and critical strike damage by 20% for 4 seconds.
Both the passive and the active are insane on Cho'Gath due to your innate tankyness with Feast, making you really hard to kill even for the most feed adc since it essentially reduces a lot of the damage from an AD champ, especially adcs.
This items is higly recommended against champs that relie on AA, like Jax Lucian Yasuo or Jinx.
Grasp of the Undying
Grasp it's probably the perfect rune for Cho'Gath, it gives us extra damage basend on our max health and grants us a permanent Health increase every time we prock it, it also heals us.
This rune it's really good not onyl because it works really well with Cho'Gath health stacking, but also because the extra damage its very useful, in the early game Grasp of the Undying + E Vorpal Spikes does a lot of damage, and later into the game this rune gives a good amount of damage even if we are going full tank.
Altough it sinergyzes a lot and its very useful Grasp its a little bad into hard matchups because we arent gonna use it a lot, and we arent gonna use it at all against ranged champions.
Since you stack a lot of HP this rune does massive damage to turrets into the mid-late game, in the early game its useful for taking turret platings and destroying turrets, since Cho doesnt have tools to easily take down turrets, unless you are going AP, in that case you deal some damage to them.
Conditioning it's very good for scaling and getting some free armor and MR, and it also increases a % of them, with some Feast stacks and this rune active you get a lot of free tankiness.
This rune it's good against Early game champions, reducing their overall damage when fighting you and the reduced damage its very good for short trades and for getting Grasp of the Undying procks without taking too much damage, if you use it try to fight the enemy laner when Bone Plating it's up.
In the late game this rune its very good, making you more hard to kill even if various enemies are focusing you, it also reduces the burst combo from most midlaners.
As you can imagine this rune sinergyzes really well with Cho'Gath because of the additional Health and because as Cho'Gath you are gonna get a lot of items with Health, it also makes you a lot tanquier in the late game.
Unflinching it's a very situational rune, but when you get the correct game it is super good.
The extra tenacity and slow resistance it gives helps against CC and slows, its really useful in teamfights where people will CC you for ages without letting you even use R.
Triumph restores hp and gives some gold when you get a takedown, its a very good rune that helps to somehow live in clutch situations, and in Teamfights the HP restoring helps to survive when you get focused.
Remember you restore a % of your missing health, meaning that if you are about to die this rune could save you, in general it's very useful.
Legend: Alacrity gives extra attack speed, wich it's useful for Cho'Gath since you can use more attacks and helps to use Vorpal Spikes.
Legend: Tenacity it's another good option in the precision tree, the extra Tenacity it's always useful to reduce the duration of CC and slows, because you are very slow and the only ability to catch up an enemy its your Q, so being CC'ed less helps to not let the enemy destroy you.
In the early game you should focus on procking Grasp of the Undying and farming, farmign ti's important on Cho'Gath not only because of the gold and XP but also to use your passive, Carnivore, if you can't farm because you are already behind or you can't win the trades, just wait until the wave crashes on your tower and farm, always be mearby minions to get XP.
I recommend playing passive and poking with Rupture Q and Vorpal Spikes E + Grasp of the Undying until you hit 6.
Once you hit 6 and have Feast you have 2 options, 1. you wait until the enemy it's low and kill him with Feast to get a stack,
or 2. you instantly eat a minion to get a stack.
I recommend the second against champs that slap you in the early game, the extra HP it's alwaays good to become tanquier, especially in hard matchups.
Generally we want to max Vorpal Spikes first because it gives us a lot of damage and has low cooldown and a slow, and we max second Feral Scream because it deals good damage and it increases the silence duration, to a maximum of 2 seconds.
The reason why maxing Rupture Q it's only good when going AP its because only the damage increases with every point, meaning that W and E offer better things with every point we put on them.
A good trick for Cho'Gath that is very effective against mobility champions its the W + Q combo, the reason for this its because the W silence doesnt let the enemy use mobility spells (not even Flash) wich makes hitting someone with Rupture Q far more easier.
Champs that i recommend using this are: Fiora (this combo let's you use Q without letting her block it with Riposte)
Camille Fizz Qiyana Zed Vayne, etc...
In the mid game Cho'Gath starts to become a high treath for the enemy team, and you will also probably already your mythic ( frosfire gauntlet probably) and finished boots, while you are building your second item.
In the mid game yoou should look to take objectives with your team and always preserve Feast R to kill it, since dragon and herald are free Feast stacks, and remember to ward when you push waves or go into the enemys jungle, since Cho'Gath it's really inmobile if you get caught by the enemy team it's very probably that you are gonna die, so always have vision of the enemy.
Good vision control and the usage of Control Ward can help you to hide in a bush, this works on Cho'Gath similar to Garen, you don't have a gapclose, but if an enemy walks into you with no vision you can disrupt them with Q or E and kill them with Feast, if the enemy ts squishy enough a whole combo + R should kill them.
If you are feed always try to do this since if you pull it off you will always have an even bigger advantague.
Also, in the midgame don't forget to stack as fast as you can your Feast on minions, monsters and objectives, once you have eat 6 minions or monsters you should have enough HP to be reaaaally hard to kill, especially if you are with your team.
In the late game the enemy team will mostly be at 4 or 5 items, if the match goes long enough even full build and Elixirs.
Here you should have around 6k or 8k of HP with around 140 armor and 120 MR or more, making you really tanky and a huge frontilner, however if the enemy also gets their items they will probably also get anti-tanks like Lord Dominik's Regards and Void Staff, which reduces a bit your tankiness, for this reason try to always bea nearby your team and wait for the perfect moment to engage, because Cho's kit is a little slow and requires to be close you need to get into a TF in the perfect moment, for example when an enemy its bad positioned or if your team stars the fight.
In teamfights use your FeastR wiselly, it is an important ability that can deal a huge amount of damage to squishy champs, you can use it to kill the adc or support (enchanter) or to kill the enemy frontiler, if you are fighting for dragon or baron you should save your ultimate to ensure that your team gets the Objective.
Cho'Gath CC it's very useful, especially his silence, for that reason always try to be nearby your team to help, if you can't help anyone ward the map and farm.
If you win a fight always try to get something out of it, an objetive, a turret, an inihibitor or steal jungle monsters, in the late game some fights and skirmishes in the jungle or in mid can decide the game, so be careful, especially because Cho'Gath doesnt have any escape or mobility.
And last, don't forget to get an Elixir of Iron once you are full build or if an important fight it's about to break out.
Aside from that theres not much else i can say, generally however wins late game teamfights wins the game or gets objectives instead.