Merrow Bonegnawer [Eventide]

Set: Eventide Type: Creature — Merfolk Rogue Rarity: Common Cost: {B} {T}: Target player exiles a card from their graveyard.Whenever you cast a black spell, you may untap Merrow Bonegnawer. Banished to the Dark Meanders for hideous crimes, some merrows find a taste for the darkness . . . and the dead.