Tasha's Caustic Brew

Components - V,S,M (a bit of rotten food).
Range - Self, 30' in a straight line.
Duration - Concentration, up to 1 min.
Cast Time {dash} 1 action.
Damage {dash} 2D4 at the start of the afflicted's turns.

A stream of acid emanates from the caster in a 30'x5'
line. Each creature in the line makes a DEX saving
throw. Upon failure, the afflicted will remain so
until they use an action to clean themselves, get
cleaned by another, or the spell wears off. Scaling.