Mutually Assured Destruction

About Mutually Assured Destruction

Mutually Assured Destruction, Assassin action - attack, designed by None first released in augustus 2026 in the set Mastery Pack Assassin.

Mutually Assured Destruction is best in an Assassin deck built to infect opposing cards consistently, especially Nuu, because it turns an otherwise symmetric reaction-punish into a reliable Contract payoff (Silver) while its banish effect supports your disruption plan; it is most effective against decks that regularly defend or pump with attack reactions, such as Ninja, Warrior, Ranger, and Assassin mirrors, but it is weak into reaction-light decks and can help the opponent by giving them a Bloodrot Pox token or banishing cards they can use from banish. In most competitive lists it is a niche sideboard-style option rather than a staple: cards such as Leave No Witnesses, Surgical Extraction, and Eradicate generally provide more dependable on-hit disruption and Contract value, while Infect is better if your deck needs to establish infected cards in the first place. Play it only if your local field is reaction-heavy and your list has enough infection support; otherwise, prioritize more co