Wrath of Sirrion

The Earth shakes, holy fire appears from the sky, and the fire begins to fall from the sky. The Fire is in the shape of a lions head mouth wide open as if swallowing the targets. Each creature in a 200-foot-radius sphere centered on each point you choose must make a Dexterity saving throw. The sphere spreads around corners. A creature takes 10d8 fire damage and 20d8 radiant damage on a failed save, or half as much damage on a successful one. Each creature in the area must make a strength saving through or be knocked prone

This does double damage to all fiends or abyssal creatures

The spell damages objects in the area and ignites flammable objects.

The Caster then can not use spells for next 1d6 rounds.