Ad Cinerem

Blazing spires of iridescent flame dance forth from three different points you can see within range. Each creature in a 45-foot-radius cylinder centered on each point you choose must make a Dexterity saving throw. The cylinders extend 120 feet in two directions (240 feet total) of your choosing, the directions must be opposing, ie* North and South, East and West, Up and Down etc. A creature takes 20d6 fire damage and 20d6 radiant damage on a failed save, or half as much damage on a successful one.

Maintaining concentration on this spell requires your entire turn and you must make a DC 17 constitution saving throw every time you take damage while concentrating on this spell. On a failed save your concentration is broken and the spell ends.

The spell damages objects in the area, ignites flammable objects that aren't being worn or carried, and creates lingering pools of lava on any terrain within its range. The pools linger for 1d4 + 2 rounds and deal 10d6 fire damage to any creature that starts or ends its turn in the pool’s space.

This spell can only be cast once every seven days.