Blood Bolt*

You hurl a twisting bolt of blood at a creature within range. Make a ranged spell attack against the target. On a hit, the target takes 1d6 Necrotic damage, and you gain a number of Temporary Hit Points equal to your Proficiency Bonus.

Cantrip Upgrade. The damage increases by 1d6 when you reach levels 5 (2d6), 11 (3d6), and 17 (4d6).