Collin, Dungeon Denizen

+1: You may sacrifice target creature. If you don't, create a 1/1 green and black Insect creature token with flying. Add one black or green mana.
-2: You may cast a spell from your graveyard and ignore its colorless mana cost. Move any amount of exiled cards to your
-10: graveyard, and any amount of cards from your graveyard to your hand. Sacrifice a creature for each unique card type moved.