Last War:Survival - Upgrade mason to UR

This is how you upgrade Mason from SSR to UR. You need the upgrade token which I believe I got from one of the season passes. I'm honestly not sure where I got it. But this is how you upgrade him once you get it. He does have to be 5 stars first, so make sure to get him to 5 stars. After the upgrade, his skills reset and he is now 3 stars! Pretty boring and basic video, but I know I will get people asking me how to do it! Enjoy