Touch of Death

Death Touch. You can focus your deadly touch against your foes. As an action, make one unarmed strike. On a hit, the target takes an additional 1d10 necrotic damage. This damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d10).

Inescapable Death. When you hit a target with an attack roll and deal necrotic damage, you ignore the target's resistance to that damage.

Withering Contact. When you start your turn grappling a creature or grappled by it, the creature takes 1d10 necrotic damage.