I'm in Master 6 and the game forcefully put me into OrangRe d*4 :S
I've got all the new cards even and now I have the option to go tryhard for the remaining gem grade up rewards @_@
Also
[History of Duel Links - The 5Ds Era - Part 2](https://www.youtube.com/watch?v=XJnC-f3J-NE)