6th Gen What can I ask for Phione on GTS?

I have two of them, so what can I ask for one? I did not see a lot of them on the GTS.

whatever you want

obviously you're not guaranteed to get it but people put up all sorts of ridiculous trades on the GTS anyway

You could always scout. Put it up and request a legendary or something of the sorts. If after a day nobody traded with you, take it back and ask for something less valuable (trade evolutions, etc.).

Repeat that process until someone trades with you and then put another Phione on there and try again. At some point you get a feeling what people will give you and what not.

I've completed the Pokedex of a couple games that way, so I know that that method works. :)

I have many Phiones and usually ask for Pokemon I don't have to fill up my Pokedex.

since it can breed it not that high of demand as many other legendarys