Blood for Blood

You harm yourself to bring amplified harm to others. Make a ranged spell attack against your target. On a hit, you take 4d4 piercing damage as your blood forms a small, floating sphere in front of you before shooting out towards your target. Then, choose an outcome: your target takes twice the amount of damage you took, or your target is considered Stunned until the start of its next turn, thanks to your blood rushing through their veins.

At Higher Levels: When you cast this spell using a spell slot of 3rd or higher, you can increase the damage you take by 1d8 for each slot level above 2nd.