Acid Guyser

A fifteen-foot square column and thirty feet high of acid geysers erupt from the caster's feet, each one a foot from the ones next to it. Any creature or construct caught in the spell's area of effect takes 2d8 of acid damage upon a failed dexterity save.

If used in a space with a ceiling lower than thirty feet, the effect is that this surface becomes an acid rain trap that does 1d8 acid damage on a failed dexterity save for five minutes or the affected ceiling collapses.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the damage increases by 1d8 for each slot level above 2nd.