The Warrior Medallion is an artifact that once belonged to Master Bo Rai Cho, but it was lost somewhere in Earthrealm years ago. Now it is in the possession of Shujinko and, somehow, it did help hone his skills during his 4 decade-old quest to find the Kamidogu. It is one of the items featured in the Konquest mode of Mortal Kombat: Deception.
The Warrior Medallion is an old golden medal with a smiling Asian face. It belonged to the great martial artist from Outworld, Master Bo Rai Cho himself, but he somehow lost it during his stay in Earthrealm some years ago.
Mortal Kombat: Deception
Years later, Master Bo Rai Cho asked Shujinko to find this item and return it to him. However, after he locates it in a fisherman's house, the astral entity Damashi appears, and tells Shujinko to keep the medallion. Shujinko shows the medallion to the Lin Kuei grandmaster. Since the medallion is a symbol of great skill in kombat, Shujinko is allowed to train with the Lin Kuei.