Control Win Condition - No Symbol (CMB2) from Mystery Booster Playtest Cards 2021, available at 401 Games Canada.

• Rarity: Rare
• Finish: Normal
• Artist: Sean Mayovsky
• Card Text:
  This spell can’t be countered.
  Shroud
  CARDNAME’s power and toughness are each equal to the number of turns you’ve taken this game. (If this is in your deck, please keep track of your turns. This means you, Mark.)