Holy One

Split Second
Flash, Flying, Indestructible, Hexproof, Lifelink, Vigilance, First Stike
Holy One costs {1} less for each other creature
card in all graveyards.
Holy One costs {w} less for each creature on the battlefield.
You can't spend mana to cast Holy One.
You may cast Holy One from your graveyard.
When Holy One enters the battlefield, if he was
cast, you win the game.