Vorador's Signet Ring

Vorador gave his ring to Kain, allowing Kain to summon the ancient vampire when he needed assistance against Malek at Dark Eden. Many years later in Soul Reaver, Kain wore the ring as an earring. It is unkown if Kain kept or still had the ring in Blood Omen 2 (but he had it by the time of his empire), & it is unknown if Vorador was still alive during Kain's Empire, if so Kain could still summon him at will.