Caustic Lance

A pressurized stream of acid, forming a line 100 feet long and 5 feet wide, blasts out from you in a direction you choose. Each creature in the line must make a Dexterity saving throw. A creature takes 10D6 acid damage on a failed save, or half as much damage on a successful one. Creatures also have their armor compromised, attacks have advantage against creatures that fail their saving throws against this spell until the creature either repairs its armor or if has natural armor, recovers all of its hit points.

The lightning ignites flammable objects in the area that aren't being worn or carried.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d6 for each slot level above 4rd.