Detritivore (PLC) from Planar Chaos, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Paolo Parente
• Card Text:
  Detritivore's power and toughness are each equal to the number of nonbasic land cards in your opponents' graveyards.
  Suspend X—X3R. X can't be 0.
  Whenever a time counter is removed from Detritivore while it's removed from the game, destroy target nonbasic land.