skyryo
Mitsuri
The Diancie on GTS are pokègenned.
Legit Diancie/clones from any language can't be traded on GTS and will bring up a message that its a special pokémon.
If you decide to get a pokègenned Diancie from GTS, keep in mind that you may not be able to transfer it to future gens and through pokebank depending on what the creator failed to adjust.
You can request any pokémon you want on GTS by selecting "What Pokémon?" at the bottom of the letter list and typing it in.
Celebi/Mew/Meloetta/Shaymin/Arceus/Victini and several others cannot be traded on GTS at all and hacked ones rarely ever make it through to it, so don't even bother requesting them.
Wait...how come when I type in Diancie, people want keldeo and gene sect in exchange for Diancie? Does that mean so that those mentioned trades won't actually go through or processed even if I have the correct pokemon for them? I'm confused...
You can request things you'll never get, yes.
It's possible to request pokémon that can't be traded in the GTS. I'm honestly annoyed by it because of all the people constantly begging for Mew and Darkrai.
gonk