Maybe something like this. Came back as a gentle peacemaker panda, appeared next to a small shrine in a bamboo forest that someone built for him many years ago because it slowly acquired more and more power until he could come back. Vishnu took this form because the shrine was powered by the energy found in the bamboo in this forest. He has in his possession an amethyst necklace that he must bring to a certain king to restore peace because the king thinks another king has stolen it but doesn’t realize that he’s wrong and is causing war for no reason.