Galdwain, Fallen Hero

+1: Galdwain becomes a 3/3 white Knight with First Strike until end of turn. Prevent all damage that would be dealt to him this turn.
-X: Return target creature or planeswalker with converted mana cost X or less from the graveyard to the battlefield tapped.
-8: Create X, 2/2 white Knights with Vigilance where X is your life total.