Ring

Uncommon

When you hit a creature with a melee weapon attack that does not have all it's hit points, you can use your bonus action to enter a state of bloodthirsty rage against that creature. This state lasts for 1 minute or until the target dies.
You can use this feature once per long rest.

While in this rage:
You have advantage on all melee weapon attacks against the marked creature, but disadvantage on attack rolls against any other creature and you cannot willingly move further away from it.
You deal an additional 1d4 damage of the same type as your melee weapon’s damage on each hit.