Blinding Spittle

Make a ranged spell attack as you disgorge a spray of toxic bile at a creature you can see within range. On a hit, the target is blinded and takes 5d8 acid damage. The damage repeats at the start of your turn each round.

At the end of its turn each round, the creature can roll a Constitution saving throw, ending the spell on a success. The creature or an ally within 5 feet can also use an action to attempt to clean off the acid, granting an immediate save attempt.

Using a Higher-Level Spell Slot. The acid damage increases by 1d8 per spell slot level above 3rd.

Adapted from the Player's Guide to Faerûn (3e)