Dark Hand

Clench your hands to fists and speak words of heresy to imbue them with dark energy. Unarmed strikes will deal an additional 8d6 necrotic damage while this spell is active. This spell does not have any effect on weapon damage.

The spells lasts up to 5 minutes with concentration.

At higher levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3.