Devouring Spores

You spray a puff of flesh-eating fungal spores toward a creature within range. 

Make a melee spell attack against the target. On a hit, the target takes 2d4 acid damage, and must make a Constitution saving throw at the start of each of its turns for the duration. On a failure, the target takes 1d4 acid damage. On a success, the spell ends.

Undead creatures make saving throws against this spell with disadvantage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, you can target an additional creature per level of spell slot above 1sr. You must make separate attack rolls for each creature.