the only issue would be mewtwo lv x. its not played much at leicester but when you go to other events i would recommend you have a counter for it. cause you dont know what people might play.
3 uxie seems to much bench warmth. alot of players use a 1-1 claydol for consistant drawing.
also people use uxie lv x here making machamp matchup alot easier.
i never liked promo toxicroak since u have to lose a pokemon , then bring it out only to get even. then they can easily killed off by opponent next turn =/