An add-on that has to be purchased in the store. You can make a new character that plays as a variant of the sorcerer class. Wild Mages tap into chaos and luck when they cast their spells.

Harness the power of chaos with the Wild Mage class archetype! Risk both person and party, where every spell cast has a chance of amplifying your powers with unpredictable effects or terrible consequences. Will you be able to handle the surge?