If Feast kills its target Cho'Gath gains one Feast stack. Feast can stack infinitely, but only 5 stacks can be gained from non-epic monsters or minions.
Each stack grants him bonus health, bonusattack range, and increased size. Stacks beyond the fifth one grant 50% reduced health. Cho'Gath reaches maximum attack range and his maximum size at 10 stacks.
「 Bonus Health Per Stack:80 / 110 / 140 bonus health 」「 Reduced Health Per Stack:40 / 55 / 70 bonus health 」