5* featured Arena grind tipps

Mainzel

Hey guys. Now that I have a couple more 6* and 5/50 champs I want to grind out the 5* featured arena and try to get the featrued champion every now and than.
Do you guys have some tips for an infinit streak or other strategys for the grind that are up to date?
Below are my best 6/5/4* champs.

GuruYosen

https://m.youtube.com/watch?v=tMGml0dv_pQ