Reja of Blind Eternities

+3: Destroy target creature. You gain X life and scry X, where X is the toughness of the destroyed creature.
-6: Destroy up to 5 permanents. You may cast spells this turn without paying their mana cost.
-20: You get an emblem that says: "At the beginning of each upkeep, flip a coin. If you win the flip, you win the game."