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Good strat for if you're making two pokemon super buffed/focused
>Step one : Catch Two/Three Nincada's
>Step two : Keep them as Nincadas for as long as possible. Evolve one if you are doing DNA Splicer cheese but for the most part keep them unevolved.
>Step three. Play as long as you can and try to grab as many high tier held items as possible (Golden Punch/Multi Lens/Etc)
>Step four. Throw them onto a Nincada and evolve it. Both Ninjask and Shedinja will have the items, duplicating them.
>Step five. Rince and repeat.
Devs prob going to fix this.