The Wizard bonus round rule is one of the many rules that can be applied during the Bonus Round episodes. It has a chance to spawn on floor 3 and further for every character, and will not spawn if Scathach is the boss of the dungeon.

Wizard

All enemies get an extra dice.

When the rule activates, all enemies get one extra dice. This makes most enemies much stronger since they can do more actions, especially Keymaster and Wizard.