Mon–Fri, 10:00 a.m. to 5:00 p.m. Pacific
customer.service@paizo.com
Search this Thread:
Can a havoker witch gain hexes from taking the Extra Hex feat?
No. You need to have the Hex class feature to take the Extra Hex feat, and the Havocker archetype trades away the Hex class feature in return for its blasting abilities.
Here is the relevant FAQ regarding when you count as having a class feature.