I didn't touch Elite PvP since day one until my gears are good and my CC is above 200k. I also don't pull on random banners and just spend all my gems on festival banners hence I was able to make the team. I'm not a whale so spending resources wisely is a must.
PS: this team is not invincible and has a lot of counters(High CC pierce team and Kyo,monspeet combo) and can get easily outCC'd since it doesn't use CC food. I was just lucky that most of my matches are mirror match and i go first most of the time. I guess patience paid off! :)