Akhenen's Arcane Domain

You create a 60 ft. radius sphere centered on yourself, which heightens your magical powers and suppresses others. This area grants you advantage on saving throws against spells and other magical effects while within the area. It gives creatures within the area disadvantage on saving throws against your spells and magical effects. Spells and magical effects originating from outside the area cannot affect creatures inside the area. In addition the area increases the damage of your damage dealing spells by one point for every damage die rolled.