The Colorless-type Mega Rayquaza-EX's Emerald Break attack is a lot more devastating than it seems at first glance. For three Colorless Energy, Emerald Break does 30 damage times the number of Pokémon on your Bench, for a maximum of 150 damage. And the Sky Field Stadium card expands your Bench to hold 8 Pokémon, for a possible 240 max damage. It’s pretty easy to see why players are so excited about building a deck around this powerhouse Pokémon.