Change is coming to the Crucible with the Mass Mutation set for the world’s only Unique Deck Game; KeyForge. Over 200 brand-new cards now enter the cardpool in the game’s fourth set; and the mutative power of the dark æmber has changed many of them; creating strange and unknown versions of once-familiar creatures. As gigantic creatures stretching across two cards lumber their way into battle; and House Sanctum makes its triumphant return; there has never been a more impactful time to leap into the fast-paced duels of KeyForge.

Each Mass Mutation Archon Deck contains a single; ready-to-play 36-card deck; bringing together three of the diverse Houses of the Crucible into a single deck—featuring its own mix of cards and unique from every other Archon Deck in existence.