U'ra'er'run (Earth-Prime)

"First, we'll need a Sacred U'ra'er'run. It's used for spiritual rituals in Mars. This one's been in my family for centuries. How does it work? In theory, the U'ra'er'run will act as a conductor. A modified Fal-Tor-Pan, as it were. Star Trek III: The Search for Spock? It'll allow us to re-fuse J'onn's piece of M'gann's soul to her body."

- J'onn, Alex and Brainy

U'ra'er'run is a Martian spiritual ritual used to fuse souls together.

J'onzz Family
At some point, the U'ra'er'run was under the J'onzz family's possession and passed onto J'onn J'onzz.

Phantom Attacks
In 2020, J'onn used the U'ra'er'run to re-fuse the small fraction of M'gann M'orzz's soul into her body in order to restore her Life-Force after being attacked by a Phantom.