Daenerys

Flying. Haste. Annihilator 2
{t}{x} Annihilation.
{x} is all mana you control. Destroy all creatures, lands, and all cards in hands. Daenerys Targaryen stays on the field. If your opponent doesn't draw a land on their next draw, you win the game. If your opponent draws a land, you must draw a land also or you lose the game.