Justin C. Adams, Visitor

+2: Create a 2/1 green Elf Shaman creature token with lifelink and indestructible.
-2: Untap all Elf creatures you control. Elf creatures you control gain vigilance, unblockable, and Poisonous 1 until the end of turn.
-8: Turn all permanents face down. They are 0/1 colorless creatures with defender.