Abyssal Destruction

An Abyssal Cloud appears in the shape of a cylinder that is 60 feet tall with a 60-foot radius, centered on a point you can see within range directly above you. The spell fails if you can’t see a point in the air where the cloud could appear (for example, if you are in a room that can’t accommodate the cloud).

When you cast the spell, choose a point you can see under the cloud. A conjuration of Destruction crashes down from the sphere to that point. Each creature within 15 feet of that point must make a Dexterity saving throw. The Target takes 4d12 Force damage on a failed save, or half as much damage on a successful one. You may cast down destruction upon your enemies by expending an action on each of your turns until the spell ends or you lose concentration. 

At Higher Levels. When you cast this spell using a spell slot of 5th or higher level, the damage increases by 1d12 for each slot level above 4th.
Allies are not immune to the spell or its effects. 
(concentration, up to 10 minutes)