Acidic Spit

You have a specialized gland that produces an acidic compound that eats away at hard surfaces. You spit this acidic compound in a 30-foot line. Each creature in the line takes 8d6 acid damage with a basic Fortitude save against the higher of your class DC or spell DC. A creature that fails its save gains weakness 5 to piercing damage until the end of your next turn (this has no effect on creatures with resistance or immunity to piercing damage). At 16th level, the damage increases to 11d6.