Wizards of the Coast will release a new farcical booster set for Magic: The Gathering, Unstable, on December 8.

Unstable was announced earlier this year (see “New Year of 'Magic: The Gathering' Releases Revealed”), and the third silver-bordered, non-tournament-legal product is a fun an whimsical way to explore new areas of Magic by bending conventional rules in a silly and fun way. The five factions (Order of the Widget, Agents of S.N.E.A.K., League of Dastardly Doom, Goblin Explosioneers, and Crossbreed Labs) are trying to build Contraptions, which are artifact cards that have triggered abilities. The Contraptions are not part of a player’s main deck, they are placed in their own deck, and eventually the player or a creature they control will assemble the Contraptions. WOTC has not completely explained the rules yet.

Each Unstable Display contains 36 Booster packs. Unstable is best used for limited formats including sealed deck or booster draft events.

See set art and multiple cards in the gallery below.