Tyreen, the seventh siren

+1: sacrifice a non-artifact creature you control, Tyreen, the seventh siren gains loyalty equal to its power
-3: exile a creature card from a graveyard, the player who owns the card loses life equal to its mana cost
-x: create a emblem that says "at the beginning of your upkeep create a blue black legendary x/x nightmare beast called Tyreen, the Destroyer"