Buster Sword (FIN) from Final Fantasy, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Normal
• Artist: Douzen
• Card Text:
  Equipped creature gets +3/+2.
  Whenever equipped creature deals combat damage to a player, draw a card, then you may cast a spell from your hand with mana value less than or equal to that damage without paying its mana cost.
  Equip 2