Leanis, the Dead one

+2: Summon a 1\1 creature token that says "add 2 of any color mana to your mana pool untapped"
-5: Summon a 3\3 angel creature that says "this creature gains +1\+1 for every angel creature on the battlefield under your control"
-10: Summon a 10/10 angel creature with Deathtouch and Haste.