Flusterstorm (SOA) from Secrets of Strixhaven Mystical Archive, available at 401 Games Canada.

• Rarity: Mythic Rare
• Finish: Normal
• Artist: Justin Hernandez & Alexis Hernandez
• Card Text:
  Counter target instant or sorcery spell unless its controller pays 1.
  Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)