Cthulhu, The Devour the World

Haste, Veil, Trample
When Cthulhu, The Devour the World enters
the battlefield, Creatures you don't control gain
a Corruption counter. At the start of your next Upkeep, take control of all Creatures with a Corruption counter. If you control ten or more creatures, you win the game.
"I will devour you all."