Easy just get as many plant or water type pokemon and you will beat it
use water pokemon lv 80 or higr
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get bubble beam on hm and there you go same on mtmoon2
you have to beat the first challenge on challenge mode or you have a 1.8 percent of getting it in the wild
Zapdos is right outside of the power plant, after you beat Red.
you have to use move like yawn whirlwind rest roar and helping hands
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Zapdos and Mewtwo
articuno , zapdos or moltress
most likely a ground or fighting type.
The Pokemon i always use to beat the elite four are charizard,mewtwo,tyranitar,zapdos,alakazam, and suicune.Lorelei=charizard for jynx and piloswine, and zapdos' thunder for the restBruno=charizard for onix and steelix, and zapdos with drillpeck with the restAgatha=mewtwo or alakazam(you choose) for all of themLance=Zapdos for gyarados and aerodactyl,alakazam or mewtwo for the dragonites,Gary=Zapdos for pidgeot,mewtwofor rydhon,zapdos with alakazam,charizard for execotur,zapdos with blastoisethat's how i usually beat it the first time and the rest of the timesi have beat the elite four 120 times and got my Pokemon to all lvl 100 with 300 hours of gameplay.hope this helpedthis is just a rough sketchof all the Pokemon