Bolt of Whispered Shadows

Drawing from the ancient whispers within, you hurl a bolt of necromantic energy at a creature or object within range. Make a ranged spell attack against the target. On a hit, the target takes 1d8 necrotic damage, and you gain temporary hit points equal to half the amount of necrotic damage dealt.

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