A few questions, /vp/.

First, if I put a Pokemon in the GTS, but ask for a certain item with it, can I reject someone who tries to trade it without it, or is it automatic?

Two, I just got a Japanese Ditto in Wondertrade. What's the significance? I know people seem to want them, I don't know about this stuff.

And third, does anyone want a shiny Scrafty or Golem? I don't really like shinies, but I need a Charizardite Y and I figured someone would be willing to trade. I don't know how friend codes work either, though.