Pandora Chaos Raven

+2: Add 4 mana of any color to your mana pool. You may spend this mana only to cast enchantment spells.
+1: Up to 4 target creatures gain your choice of First strike, Skulk, Trample, or +1/+1 until end of turn.
-18: Exile all creatures you don't control, and up to 3 target permanents. Shuffle Pandora back into it's owner's library.