Honestly, the Geara and Zetta fight is the hardest fight in the game for me especially in intense, I mean it's ok to abuse the field and have a really strong, sturdy and fast pokemon i can deal with that but the problem is Melia she always a burden and hinder my strag god knows how many times and those mega Gengar and Typhlosion are honestly too strong for my Lv 45's team, in order to clear this fight i was forced to train a Talonflame with a tailwind to outspeed their team and use my own Typhlosion to destroy them.
sorry for the long rant just frustrated when remembering all those reset, time and those fail strag just to overcome this one battle....