Hand of Glory

From the introduction:

Created from the preserved remains of a severed human hand, the hand of glory is a ghastly magic item that is often shunned by the goodly aligned and squeamish of adventurers but those with steeled hearts and stomachs find that the hand serves its purpose well. The hand grants the wearer the usage of another magical ring and while it takes up the ability to wear a magical necklace, the hand of glory has its own magical abilities, granting the wielder the ability to cast daylight and see the invisibility. The question of who first created such an item is one that has long gone unanswered until now…and the tale comes from the cold, undead lips of the creator himself.