Grimvog, Beast of the Swamps

Player
At the beginning of your upkeep, up to one target creature card in your graveyard gains Dredge 2 until end of turn. (If you would draw a card, instead you may put exactly two cards from the top of your library into your graveyard. If you do, return that card from your graveyard to your hand. Otherwise, draw a card.)
Mana Pool - {b} or {g}