Yeah, was pretty easy in the end, beat and caught it first time in a regular ball.
Used the Mewtwo that gets rid of itself as a mega, Tapu Lele to clear blocks, Magearna to delay disruptions and something else that ups a psychic combo. None of the skills even triggered that much and I still won with six moves to go.
Demolish is a pretty great skill, a burst-damage fighting team is mad powerful right now.