Last Rites Rum

When you drink this potion, you take 2d4 Necrotic damage. For 1 hour, you have Resistance to Radiant damage, and whenever you deal damage with your Unarmed Strike, it can deal your choice of Necrotic damage or its normal damage type. This potion is thin and gray. It smells vaguely unpleasant but tastes like nothing at all.