You manifest a pocket of Hell. A 15-foot-radius sphere of darkness, brimstone, and blasting heat appears, centered on a point within range and lasting for the duration. The cloud of hellfire echoes with the cries of damned souls that can be heard by creatures within 30 feet of it. No light, even magical light, can illuminate the cloud, and any creatures fully within that area are blinded.   The cloud warps the timescape, making the cloud’s area difficult terrain. A creature who starts their turn in that area takes 3d6 fire damage. A creature who ends their turn in that area must succeed on a Wisdom saving throw or take 3d6 psychic damage as the voices of the damned crowd their mind.