Unleash Your Mind (Nifrxe-gate)

You unleash your imagination around yourself in a massive boom of power. The area around you starts to distort and change, it becomes tough terrain. Any creature withing 20ft of you takes 7d10 Force damage. Creatures within 30ft of you take 5d10 damage, and any creature within 4ft of you take 3d10 damage. While your imagination is unleashed, all mental effects and spells do not work on you. You are unable to make any other attacks in the three rounds this spell is active. All creatures must make a Wis save against your spell DC or take full damage and become frightened 2 and stunned 2 while they are within the area of the spell.