Blood Manipulation

You manipulate your own blood using dark magic. Blood droplets escape from the palm of your hand and collect as a floating crimson liquid sphere. You can do one of two things with this blood:

Make a ranged spell attack against the target. On a hit, the target takes 1d10 necrotic damage.

Heal a target of your choice by 1d4.

This spell's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10). The caster also suffers damage every time this spell is used. The caster takes 2 necrotic damage every time this spell is used.