Fphyggi’s Gem Feeder

3rd-level necromancy (bard, sorcerer, warlock, wizard)
Casting Time: 1 action
Range: 30 feet
Components: V, S, M (a soul gem)
Duration: Instantaneous

A bolt of negative energy surges from your outstretched hand toward a creature of your choice within range. Make a ranged spell attack against the target. On a hit, the target takes 6d8 force damage. If this damage reduces the target to 0 hit points, it dies and its soul is trapped inside the soul gem if the gem is large enough to hold it.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d8 for each slot level above 3rd.