Goblin Kaboomist (M15) from Magic 2015, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Kev Walker
• Card Text:
  At the beginning of your upkeep, create a colorless artifact token named Land Mine with "R, Sacrifice this artifact: This artifact deals 2 damage to target attacking creature without flying." Then flip a coin. If you lose the flip, Goblin Kaboomist deals 2 damage to itself.