Croup

You summon a small cloud of vapours filled with the bacteria, viruses, fungal spores, and lung irritants which surround one target that you can see. The target must make a CON save or suffer uncontrollable hacking coughs until the end of their next turn. These coughs are so pronounced that they cause muscle spasms and cracked ribs, dealing 3d4 + your spell casting modifier bludgeoning damage. Further, the constant coughing causes the target to have disadvantage on attack rolls until the end of their next turn.

On a successful save the target resists the effects of the spell. The spell automatically fails if the target lacks a respiratory system.

When cast using a higher level spell slot increase the number of targets by one per spell slot level. Two targets for a 2nd level spell slot, 3 for a 3rd, and so forth.