Blood Clot

Make a melee spell attack against a creature you can reach. On a hit, the target takes 3d10 necrotic damage.

The target must make a Constitution saving throw at the start of each subequent turn until they succeed. On a failure, they take an additional 1d10 necrotic damage.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the initial damage increases by 1d10 for each slot level above 1st.