lol yea u can, retreat uxie x, bring up a bat poketurn it and voila, another dead champ.
your turn: uxie x active, drop crobat, use zen blade, knockout machamp. lucario must be in play.
their turn: bring up other machamp that they set up in 1 turn with bts/candy/1 energy, take out uxie x.
your turn: initiate scoop phase, unless night maintainence is in hand, and a bebe's or something to recover uxie x, with uxie on bench and dce in hand. <-- likely? I don't think so. Unless you have unown g, uxie gets screwed by second machamp or a lucky hurricane punch even if it is attached, and there isn't anything you can do about it. That's what I was referring to. I know about the turn trick, but you have to have an uxie x that hasn't been taken out for it to work haha.