Nihilis, Wraithwalker

+2: Target creature becomes a Wraith in addition to its other types and gains Shadowborne.
-1: Destroy target creature with converted mana cost equal to or less than your loyalty to Nihilis, Wraithwalker prior to activating this ability.
-5: Put target creature from any graveyard onto the battlefield under your control. It is a Wraith in addition to its other types.