Blood Bolts

You create 4 glowing orbs of magically enchanted blood. Each orb hits a creature of your choice that you can see within range. An orb deals 2D4+2 Necrotic damage to its target. The orbs all strike simultaneously, and you can direct them to hit one creature or several. You lose 2D4 hit points when you cast this spell owed to blood loss. This damage cannot be reduced or negated in any way.

You then heal for half of the damage dealt by the bolts.

The number of Bolts increases by 2 when you reach 5th level (6), 11th level (8), 17th level (10).
You also lose an additional D4 hit points when you reach 5th level (3D4), 11th (4D4), 17th (5D4).