Domain Expansion

Domain Expansion is an expansion of the user's innate soul. It creates a 20-150 ft. sphere centered around the user, with an AC equal to 14 + your spellcasting modifier and 250 HP. Within the user's domain expansion, all of their attacks are guaranteed to hit, and enemies automatically fail Dexterity saving throws to dodge the user's attacks.

When upcast to 8th or 9th level, the maximum range increases by 50 ft., and a customized rule can be applied to the domain (up to DM's discretion).