Blistergrub (DDR) from Duel Decks: Nissa vs. Ob Nixilis, available at 401 Games Canada.

• Rarity: Common
• Finish: Normal
• Artist: Daarken
• Card Text:
  Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.)
  When Blistergrub dies, each opponent loses 2 life.