After .5 seconds, Cho'Gath devours an enemy unit, dealing 300 / 475 / 650 (+0.7 per ability power) true damage (1,000 to minions) that ignores armor and magic resist. If the target is killed, Cho'Gath grows, gaining 100 / 140 / 180 extra health (doubled for enemy champions, max 6 stacks). If the target was a minion or a monster, half the cooldown and mana cost are refunded. Each stack of Feast gives Cho'Gath 3.8 / 6.2 / 8.3 attack range, up to 23 / 37 / 50 bonus range. If Cho'Gath already had 6 stacks, he heals for 100 / 140 / 180 instead (doubled for enemy champions). Cho'Gath loses half his stacks (rounded up) upon death.