Ravenous Ring (Patreon)

Ring, uncommon

While wearing this ring, you can use an action to transform your hand into a kraken-like maw and touch a creature within 5 feet of you. When you do, the creature must make a DC 13 Dexterity saving throw, taking 3d6 necrotic damage on a failed save, or half as much damage on a successful one. Your hand then returns to normal. If the creature fails the saving throw, you also gain a number of temporary hit points equal to half the necrotic damage dealt. These temporary hit points remain for 1 minute. Once this property of the ring has been used, it can't be used again until the next dawn.

"From the depths all life came, and to the depths all life will return. Allow me to hasten that journey for you."