Dancing Sword - Promo Pack (Foil) (PAFR) from Adventures in the Forgotten Realms, available at 401 Games Canada.

• Rarity: Rare
• Finish: Foil
• Artist: Wisnu Tan
• Card Text:
  Equipped creature gets +2/+1.
  When equipped creature dies, you may have Dancing Sword become a 2/1 Construct artifact creature with flying and ward 1. If you do, it isn't an Equipment.
  Equip 1