Drorin, Shadows Keeper

+2: Discard a card. If the discarded card was a creature, deal X damage to target creature. Otherwise, deal X damage to target player. X is the cmc
-4: Draw a card for each creature you control, then put any number of cards on bottom of your library.
-8: Create a token that is a copy of Drorin, Shadows Keeper except it is not legendary.