Cthulu, Great Old One

Delve, Flying, Islandwalk

Cthulu, Great Old One's power and toughness are equal to the number of cards you own in exile.

Each card in your hand has madness. Its madness cost is equal to its casting cost, minus {2}.

At the beginning of your upkeep, you get a madness counter, then exile X permanents you control, where X is the number of madness counters you have.