God of Fear and Hunger

Defender, Hexproof. At the beginning of your upkeep, it becomes 0/6. When it enters, opponent exiles their library except six cards of their choice. Creatures you control gain defender. Abilities of all creatures are disabled except this one. When it leaves, that player shuffles their exiled library into their deck.

{ut}, {1},: All creatures get -X/-X until end of turn, where X is the number of times this ability has resolved plus one. If a creature dies this way, exile it and put a +0/+1 counters on