Star Wars: Predators
The Staff of Ossus
The Staff of Ossus was found in the grove beneath the Ossus Temple. Predator Squadron found it and escaped with it under pursuit by Darth Vader.
It has been noted that the staff seems to have some sort of influence over animals – escaping Ossus it vibrated as a large space-bound creature approached. Tobin Stryder later used it to channel the Force and get Rathtars to turn on each other, although he is not sure quite how he managed this.
Vader engaged Predator Squadron during the fall of Echo Base. During this encounter he acquired the staff from them.