Now I'm honestly tilted enough to want to assume his ult is broken, stacking as much health as he can while losing none of it, effectively making some builds top darn near obsolete. But I'm wondering what the idealized counter is to something like this. What do people usually build to counter a health stacking monster?
BOTRK, Lord Dominiks Regards would be my first two items. so... any of these. 
all do percent health damage
No matter how much health you stack, you'll die in team fights come late game
well, hp stacking is countered by Botrk and bloodrazor msotly, and a bit by liandrie's, and alot champs also use %hp damage(and Fiora can still take ~70% of his hp with her ult in no time come to lategame) But mostly, even with alot hp, damage overall is hihg enough to burn through him even without %hp damage, while he and his kit are rather easy to avoid.
Though whats quite absurd is his interaction with hp scaleing items. Titanic hydra deals absurd damage later on with him, grasp actually scales to good damage and is worth takeing, and ZZrot'S voidlings rip towers apart like nothing. And his Ult with fulltank built deals as much damage as AP cho's ult.
He's probably still to unreliable for hogher elos, but i can totally see how he causes frustration in lower elos.
I don't know have you tried picking any of the 80 champs that counter him top lane and not feeding?
Trust me there are alot of counters to cho! Also this "buff" nerfed his midgame powerspike, he lost up to 360HP and his stacking time and window of weakness(ult on cd) got doubled too, so he is alot easier to beat inlane too xD His playrate increased a lot but his winrate still stays at 45% and worse at best xD So you dont need to fear the allmighty Omnomnomer. This buff was basicly a powershift into the lategame, which doesnt really exist in the current meta xD
Also I dislike that he cant lose stacks, he should lose 1 or 2 on death, but below 6 stacks he should get the old ulti back!
But Cho'Gath is easy to kite. He should melt even if he has 500 more Health than a Tank because he doesn't have anything to keep that Health up.
Kog used to be the Cho counter...Kindred too... Its just that these champs are not good at present.
says hai.
OR
even then his offensive capability's stay the same as any other champion. and max size stacks can be a pain to get with the cool no longer being halved is you kill something with it,and there are diminishing returns so eventually at like 10 stacks every other stack is I think 80 HP. he generally gets 4K HP late game with some pretty high regen,but like every champ he has cooldowns so dodge his two skills and try to NOT be under 300-i think 500 HP and all he can do is auto for the next like 7 or so seconds
- I like those stats you have, I'll be using those
- hp, what hp?
- liandris rylis dot
- passive op
- I can just outlast you
- %hp true damage
- can attack through 400 armor
- what resistances, can build bork with as
- hp kill
- bork, with jungle item or last wisperor upgrade
- armor kill passive can buid bork plus jungle itme
- get enough rend stacks profit
If Cho'gath misses his Q/W, he gets kited easier than a Mordekaiser without rylais. Plus, with all the %hp damage in the game, a lot of HP won't do much if you cant get to your target.
He has lower damage, his q is easy to dodge,and his hit box is huge so it's easy to hit him with stuff
Anyone with any sort of percent health damage lul...also if you have a team with any sort of kitability cho'gath would have such a hard time getting to his intended targets and he doesn't damage tanks easily
% Health damage is everywhere.
Also
Fiora is the big one because the % true essentially means her ult is instant dead cho.
