My two ways of winning:
1st: play Ageless mentor, then you get BIG charge units by turn 4 and hopefully if anything comes to kill them or permafrost you just return it to hand atk again, pretty simple
2nd: multiple endra spells on op's face with returns until you get your big charge units again.
*TIPS: usually i try and play endra on turn 3 with any return spell so i can protect it and waste op's kills, also dont forget about venom rider's ability to to deal with anything pesky and HAVE FUN! It got me from gold 3 to diamond 1 lmao