Transmute Flesh

You point your finger at a piece of exposed skin or flesh you can see within range. You briefly turn the exposed skin into another type of vegetable material, such as stone, grass, tree bark, or rotted flesh. The target must succeed on a Constitution Saving Throw against your spell save DC or take 2d10 Necrotic Damage; additionally, on a failed saving throw, the target must roll a d4 and subtract the result from the next attack roll it makes. At higher levels, the damage increases by 1d10 per spell slot above 1st.