Tasha's Caustic Brew

Source: Tasha's Cauldron of Everything, DND 5e Wiki

1st-level evocation

Casting Time: 1 action

Range: Self (30-foot line)

Components: V, S, M (a bit of rotten food)

Duration: Concentration, up to 1 minute

A stream of acid emanates from you in a line 30 feet long and 5 feet wide in a direction you choose. Each creature in the line must succeed on a Dexterity saving throw or be covered in acid for the spell’s duration or until a creature uses its action to scrape or wash the acid off itself or another creature. A creature covered in the acid takes 2d4 acid damage at start of each of its turns.

At Higher Levels. When you cast this spell using a spell slot 2nd level or higher, the damage increases by 2d4 for each slot level above 1st.

Spell Lists: Artificer, Sorcerer, Wizard