Dauthi Voidwalker is a mythic Creature — Dauthi Rogue card from Marvel Universe (MAR), collector number 63. Current market price: $3.85 (foil $6.69), TCGplayer market prices via Scryfall.
Shadow (This creature can block or be blocked by only creatures with shadow.) If a card would be put into an opponent's graveyard from anywhere, instead exile it with a void counter on it. {T}, Sacrifice this creature: Choose an exiled card an opponent owns with a void counter on it. You may play it this turn without paying its mana cost.