Searing Rain

Searing Rain is one of the most destructive spell known in the Age of Armageddon.

Spell Description
Casting it causes a thick rain of pure, concentrated acid to pour down in a wide area surrounding the caster, who themselves is protected from the acid. The rain keeps going until either being dismissed or the caster's mana runs out. In this horrible inferno, next to nothing can survive and even the greatest creatures die a horrible death. Needless to say it is strictly forbidden to cast this spell in inhabited areas. Also, it logically can only be cast while being ouside of enclosed spaces or buildings.