Vitality Transference

You slice your hand suffering 1d4 piercing damage then flick blood at a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 1d6 necrotic damage as your blood draws out their vitality transferring their life force to protect you briefly. You regain hit points equal to the necrotic damage dealt.

This spell's damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).