Blood Lance

You draw your own blood into a lance as hard as steel, launching it into a target. On a hit, the target takes 1d8 necrotic damage. You may spend any number of temporary hit points to increase the damage of this spell by an equal amount of necrotic damage.

This spell's damage increases by 1d8 when you reach 5th level (2d8), 11th level (3d8), and 17th level (4d8).