Quoted By:
Consider the following
>armor Mewtwo can use items but the armor breaks if its HP goes red, also if Mewtwo megaevolves
>shadow Mewtwo goes back to normal Mewtwo form after 3 turns megaevolution is also lost
>Z-crystals can't be used by armor Mewtwo, Dynamax can't be used on shadow Mewtwo without losing the shadow from. And obviously dynamax can't be used at all if Mewtwo holds a Z-crystal/megastone