Mega Golduck--becomes psychic/water, maybe has a headache ability to boost psychic moves, but adds recoil.
Same. That would be really cool. Imagine a Mega Ninetales with psychic powers, alluding to its appearance in "Waiting on a Friend"
Mega Arcanine would be epic
I really want Mega Dunsparce, with a fairy / normal split
The poor thing is so neglected ;-;