Straxus's Time Ring
From Tardis Wiki, the free Doctor Who reference
Straxus used a Time Ring to find the Eighth Doctor during the Morbius incident.
Lucie Miller stole it from him. (AUDIO: Sisters of the Flame)
The Doctor then tried to use this time ring to escape the Sisterhood of Karn's dispersal chamber. (AUDIO: The Vengeance of Morbius)