Mutually Affured Destruction - MP21-EN032 - Common - 1st Edition from 2021 Tin of Ancient Battles 1st Edition, available at 401 Games Canada.

• Rarity: Common
• Card Text:
  Both players must keep their hands revealed this turn. While their hands are revealed by this effect, if they both have a card with the same name in their hands, neither player can activate cards with that name, or their effects.