Blood Boils

You attempt to fester blood boils on a creature you touch. Make a melee spell attack against the target. On a hit, the creature suffers 2d8 acid damage as boils well up and burst all over their body. Each round thereafter at the beginning of the creatures turn, it can attempt a Constitution saving throw. On a success, the creature ends the boil effect. On a failure, the creature suffers 1d6 acid damage, as the boiling blood from the burst boils singes their skin. Creatures targeted by this spell must have blood for this spell to work.

At Higher Levels: When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for the initial damage, and 1d6 for the subsequent damage for each slot level above 1st.