Amelia, of Mana and Fire

+1: Look at the top 3 cards of your library, you may put any number of lands onto the battlefield tapped,and put the rest on the bottom in any order.
-3: All creatures opponents control get -3/-3 until end of turn
-7: You get an emblem with whenever you cast a spell, this emblem deals damage to all opponents equal to the spell's CMC.