Boggart Mob (LRW) from Lorwyn, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Thomas Denmark
• Card Text:
  Champion a Goblin (When this comes into play, sacrifice it unless you remove another Goblin you control from the game. When this leaves play, that card returns to play.)
  Whenever a Goblin you control deals combat damage to a player, you may put a 1/1 black Goblin Rogue creature token into play.