Entropic Degeneration

You unleash a torrent of entropic force against a creature within range. The target must make a Constitution saving throw. On a failure, the target takes 4d8 force damage and 4d8 necrotic damage, or half as much damage on a success.

On a failed save, the target’s form is rendered unstable. Whenever that creature makes an attack roll, ability check, or saving throw, that creature suffers a -1 penalty to the roll, or a -2 penalty if it has half its hit points or fewer. This effect lasts until the target completes a long rest.

At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the force and necrotic damage you deal increases by 1d8 for each slot level above 5th.