Mega Lucario EX has 220 HP, which is fairly standard for Mega Evolutions. He only has one attack, but that attack is formidable. Rising Fist deals 140 damage for only 3 Fighting Energy, making it considerably better than Lucario EX’s final attack. That attack only deals 100 for 3 Fighting Energy with no additional effects. This attack also makes your opponent’s active Pokemon have to discard an Energy card attached to it.
As if Lucario EX wasn’t solid enough to begin with, his Mega form is definitely a force to be reckoned with. It's well worth being played in any deck alongside his normal form to be a destructive finisher. He not only deals major damage but also sets your opponent’s Pokemon back, as well. Without a doubt, the Furious Fists set is built around this combination of Lucario and his Mega form.