DnD 3.5 to 5e Spell Conversions: Acid Storm

Acid Storm

6th-level conjuration

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• Casting Time: 1 action
• Range: 120 feet
• Components: V, S, M (a flask of acid)
• Duration: Concentration, up to 10 minutes
• Classes: Sorcerer, Wizard

You conjure a dark green cloud above a point you choose within range, which unleashes a shower of foul-smelling yellow green rain in a 20-foot-radius, 60-foot high-cylinder centered on that point. When a creature enters the spell’s area for the first time on a turn or starts its turn there, that creature must make a Dexterity saving throw. The creature takes 6d6 poison damage on a failed save, or half as much damage on a successful one.

Additionally, on a failed save, nonmagical armor worn by the target is partly dissolved and takes a permanent and cumulative -1 penalty to the AC it offers. The armor is destroyed if the penalty reduces its AC to 10.

At Higher Levels: When you cast this spell using a spell slot of 7th level or higher, the damage increases by 1d6 for each slot level above 6th.

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One of the spells from my conversions of the entire Dungeons and Dragons 3.5 Spell Compendium into 5e and published in Spells of Antiquity. If you thought Acid Breath didn't do enough damage and don't want to get close enough for Acid Sheath to do the job, maybe it's time to just ruin everybody's day with a deluge of acid instead.