KeyForge: Mass Mutation – Archon Deck

About this expansion

KeyForge: Mass Mutation – Archon Deck is a ready-to-play two-player card game with an approximately 45-minute play time, released in 2020. Each deck brings together three diverse Houses of the Crucible in a single, uniquely assembled 36-card deck.

Mass Mutation is the fourth set for the world’s only Unique Deck Game, introducing more than 200 brand-new cards to the card pool. The mutative power of dark æmber has changed many familiar cards, creating strange and unknown versions of once-familiar creatures.

Every Mass Mutation Archon Deck contains its own mix of cards, making it unique from every other Archon Deck in existence. With a complete deck in each package, players can move straight into the fast-paced duels of KeyForge.

• A single, ready-to-play 36-card Archon Deck
• Three Houses of the Crucible in every deck
• More than 200 new cards introduced by the Mass Mutation set
• Mutated versions of familiar creatures
• Gigantic creatures that stretch across two cards
• The triumphant return of House Sanctum

As strange mutations reshape the card pool and enormous creatures lumber into battle, Mass Mutation marks an especially impactful chapter in the Crucible. KeyForge: Mass Mutation – Archon Deck offers a distinct deck experience for every Archon Deck, ready for two players to discover through head-to-head play.