Ravenous Trap (ZEN) from Zendikar, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Cyril Van Der Haegen
• Card Text:
  If an opponent had three or more cards put into his or her graveyard from anywhere this turn, you may pay 0 rather than pay Ravenous Trap's mana cost.
  Exile all cards from target player's graveyard.