I would personally replace no. 3 Mega Lopunny with Mega Gardevoir because of the typing, Special stats and ability. With pixilate, you get STAB and extra 1.3x which pretty much means OHKO Fairy-type moves against Dark, Fighting, and Dragon types. With HP EVs or Defense EVs and Calm Mind.....Mega Gardevoir kills everything (bye bye all so powerful dragons XD). And I have to say, that is a really nice list.