Ring of the Champion

Ring, very rare (requires attunement)

This brilliant silver ring was created for a champion long ago to help heal them in battle. The ring has become corrupted by the deaths caused at the champion’s hand. While attuned to this ring, you can roll up to 3 hit dice any time you are healed by a magical effect. The hit dice function as they normally would. If you are currently out of hit dice, you can roll up to 3 hit dice as normal, but you take a negative 1-3 (depending on how many dice are rolled) on your death saving throws until you take a short rest.

Curse: The first time you drop to zero hit points, the ring changes to a dull grey. You can no longer be healed by magical means. The curse can be lifted with a remove curse or greater restoration spell.