Ring of Regeneration

Ring of Regeneration gives the wearer the ability to regenerate one lost hitpoint every six seconds. This item appears in Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition. This ring is gained as a reward in the Asylum Dungeon for answering all twelve answers correctly.

In-game description
"Ring of Regeneration A lowly ranked Red Mage named Huhhus is said to have discovered the perfect way to distill troll flesh to make a potion that provided the same regenerative ability as that of the troll. Few were willing to drink the vile liquid however and decades later a student of Huhhus created this ring, building upon the foundations of knowledge laid by Huhhus. Within the hollow cavity of the jade ring floats the ichor and brains of a troll, providing a limited regenerative capability to the wearer."