Corrupting Shot

You brandish the weapon used in the spell’s casting and make a ranged attack with it against one creature within 30 feet of you. On a hit, the target suffers the weapon attack’s normal effects, and is surrounded by a deathly energy until the start of your next turn. If the target is dealt damage by a creature other than you before then, the target takes necrotic damage equal to your spellcasting ability modifier, and the spell ends.

This spell’s damage increases when you reach certain levels. At 5th level, the ranged attack deals an extra 1d8 necrotic damage to the target on a hit, and the necrotic damage the target takes when dealt damage by another creature increases to 1d8 + your spellcasting ability modifier. Both damage rolls increase by 1d8 at 11th level (2d8 and 2d8) and 17th level (3d8 and 3d8).