Beautiful Face

When Beautiful Face enter the battlefield, gain control of all creatures all players control.
Creatures you control have indestructible,
hexproof, and flash.
Beautiful Face cannot be countered.
{x}{w}{t}: Beautiful face deals X damage to any target and you gain X life, where X is the number of creatures you control.
At the beginning of your end step, if you control 20 or more creatures, you win the game.