Rock of Imandan

Mages and clerics debate the origin of the Rock of Imandan. Some say it fell from the skies during a time of falling stars. Some say it was a gift from the gods or a place of sacrifice. Others believe it is an ancient artifact that should have remained buried as it only brings sorrow.
The Scholar King Imandan was the one to unearth the Rock 200 years ago. As was his annual tradition, Imandan left the seat of his kingdom and traveled, seeking truths to the legends he had heard as a child. He took expeditions to deserts rumored to have once held ancient seas and to jungles where the old women said men with wings once soared above crystal seas. He may not have found water or winged men, but sometimes he found ruins of previous kingdoms and strange fossils that spoke to long dead creatures.
When he found the Rock, he was traveling with his only son, Imandan II. The two climbed the peaks of the Seven Ridges, following a story about a dragon whose scales had shimmered with all colors until the dragon could bear some unspeakable grief no more and lay down to sleep forever. When the sun rose and set, it was said the the seven ridges glowed with every color imaginable. Imandan wanted to show his son the phenomenon and share his love for the past.
Imandan II, as all men know, only had eyes for the future.
The two camped on the center ridge during a snow storm. The snow quickly covered the mouth of the cave and father and son began exploring the cave's depths to find another way out. Imandan II disappeared from his father's sight when the cave floor suddenly gave way.
Imandan could see his son lying 100 feet below him. The Scholar King knotted ropes together and lowered himself to his son's broken body. The boy still drew breath though blood seeped from his mouth.
As Imandan cradled his son, he cried to the heavens to save the boy, pledging his own life in return. Some say the gods heard Imandan's plea and shone a light on the Rock. Some say Imandan tore through the underground chamber looking for a way out so his son would not die without seeing the sun.
The truth is lost to legend. What remains is that Imandan and his son emerged from the mountains, towing a piece of granite behind them. As they returned to the palace, Imandan II pulled most of the weight while the Scholar King leaned on his son.
In three months time, Imandan II assumed the throne. The granite rock rested in his private chambers.
Like the palace and its mystical gardens, the granite rock has vanished. No one knows whether the Marauding Horde carried off the Rock when they destroyed the palace. Perhaps it remains in the ruins deep underground, waiting to be discovered.
The Rock of Imandan has the power to heal all wounds, diseases, conditions and poisons from one character. The hit points needed for healing are drawn from another character with whom the wounded player has bonded. The bond may be pledged immediately before the Rock heals. The bonded character may not be healed by magical means and will only heal 1/2 of lost hit points during a long rest.
In addition, the wounded player must make a WIS save (DC 13) to resist the Rock's power of drawing 1d4 hp from the bonded character per day. If the wounded player is at full health, these gained hp are temporary hit points. The wounded character must save each day (DC increases by 1) or draw new hp from the bonded character until the bonded character is dead. A successful save ends the curse.