Animate Spell - No Symbol (CMB2) from Mystery Booster Playtest Cards 2021, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Alli Steele
• Card Text:
  Flash
  Enchant instant or sorcery spell on the stack
  When CARDNAME becomes attached to an instant or sorcery, put that card onto the battlefield under its owner’s control. It’s a creature in addition to its other types with power and toughness each equal to its converted mana cost.
  When CARDNAME leaves the battlefield, enchanted card’s owner sacrifices it unless they cast it.