Btw since rayquaza developed the organ that lead to x and y forms rayquaza is the ancestor of charizard, and mewtwo probably got dna from her, so maybe there could be an event after she gives birth on the boat to (or away from) kalos where she reveals that mewtwo is not just "Twosie" but also a clone of the sky dragoness herself. i saw the post about rayquaza giving mewtwo her mega stone (presumably after doing some offscreen mining in the thermosphere) and i think that was a great idea!