Mortarpod (MM2) from Modern Masters 2015, available at 401 Games Canada.

• Rarity: Uncommon
• Finish: Normal
• Artist: Eric Deschamps
• Card Text:
  Living weapon (When this Equipment enters the battlefield, put a 0/0 black Germ creature token onto the battlefield, then attach this to it.)
  Equipped creature gets +0/+1 and has "Sacrifice this creature: This creature deals 1 damage to target creature or player."
  Equip 2