Mega Lucario ex Decklist: Riolu (x2), Lucario (x1), Mega Lucario ex (x2), Bonsly (x2), Hitmonlee (x2), Professor's Research (x2), Cyrus (x2), Copycat (x1), Korrina (x1), Arena of Antiquity (x2), Rocky Helmet (x1), Pok Ball (x2) The aim of this deck is simple: get Mega Lucario ex to hit for as much damage as possible
Of course, you still need to get the cards on Arena to build them
Gardevoir ex has a powerful Ability, but Expanded has no shortage of Energy acceleration, and Psychic Embrace doesnt seem to offer enough to warrant using a stage 2 as an Energy accelerator, when it can be shut down by so many cards (Garbodor [Breakpoint] comes to mind)
Ramp up to six lands and youll be able to take over the board in no time
Activation[edit] To negate the activation of a card or effect is to cause it to not resolve after being activated