Coagulate

You cut yourself and let the blood pool out of your arm into a solid sphere the size of your fist, a manifestation of your ire which shoots to a creature in range you can see. Take 1d4 slashing damage and make a ranged spell attack against the target. On a hit, the target takes necrotic damage equal to 1d8 plus the amount of slashing damage you took from this spell.

This spell's necrotic damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8). For each additional 1d8 of necrotic damage, you can optionally take an extra 1d4 of slashing damage to add to the damage you deal.