Demon of Life

Flying, Deathtouch, Haste, Lifelink, Hexproof, Vigilance, Double Strike
Landfall - When a land enters the battlefield, all creatures you control get +2/+4 until end of turn.
Demon of Lifes' toughness is equal to the amount of lands on the battlefield.
When Demon of Life enters the battlefield, you gain 8 life and all opponents lose 8 life.
If you have both Demon of Life and Angel of Death on the battlefield, you win the game.