Gorgon Flail (J25) from Foundations Jumpstart, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Lars Grant-West
• Card Text:
  Equipped creature gets +1/+1 and has deathtouch. (Any amount of damage it deals to a creature is enough to destroy that creature.)
  Equip 2 (2: Attach to target creature you control. Equip only as a sorcery.)