It's full moon in the magical world of Witchstone, and as everyone knows, witches and wizards develop very special powers during a full moon. Their abilities become more powerful, and the potion in their cauldrons even more effective.
The Witchstone: Full Moon expansion includes two expansion modules that can be used individually or together, one of which features new cauldron tiles for better chain reactions; 3D miniatures; and new special cards that among other things let you activate one of two special abilities each turn.