Electrolyte

A hot stream of vitriol streaks toward a creature of your choice within range. Make a ranged spell attack against the target. On a hit, the target takes 2d4 acid damage and gains vulnerability to lightning until the end of your next turn. 

At Higher Levels. This spell allows more than one target when you reach higher levels: two targets at 5th level, three targets at 11th level, and four targets at 17th level. You may direct your attack at the same target or at different ones. Make a separate attack roll for each.

This homebrew spell is among a small selection of Acid magic created for a campaign featuring a player-character who wished to expand their spell list to align with their Sorcerer's Draconic Heritage. Many such spells are attempts to re-flavor existing magic under an acid theme. To view the whole list, please reference my username, Grumbler, while searching. I'm happy to accept and consider any criticism or insight in the development of these spells.