Desiccating Touch

Your mere touch siphons the moisture out of a living creature. Make a melee spell attack against a creature. On a hit, the creature takes 2d8 necrotic damage and must succeed on a Constitution saving throw, or gain a level of exhaustion. If the target already had one or more levels of exhaustion, this saving throw is made at disadvantage.

At Higher Levels. When you cast this spell using a spell slot of 2nd or higher, the spell causes 1d8 more damage for each spell slot above 1st.