Bloodshot

You fire a thin beam of pressurized blood at a creature you can see within range, making a ranged spell attack in the process. On a hit, the creature takes 1d8 piercing damage. Make the attack roll for this cantrip with advantage if the creature has fewer than half its hit points remaining.

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