GTS

A notorious Pokémon hack explained by Professor Haxorus himself.

True, most offers on the GTS are like that, but "FAIR TRADE?"

I really wanted a Magikarp who knows how to Splash, they're kind rare these days!

So I wanted a Mightyena...

This crap has been ruining a genius feature ever since it was invented, and Game Freak has done absolutely nothing about it.

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And by "obtainable," I mean legally obtainable, in game, with no cheats.