>>30819930Are you serious? It gets an offensive buff, and an ability that basically gives it a free Choice Band/specs without locking it into a move or wasting HP.
Many megas have to choose between giving up their item and the mega stone, but Lucario is not one of them, because the mega is literally better in every regard even with the item.
252+ Atk Choice Band Lucario Close Combat vs. 252 HP / 0 Def Jirachi: 288-339 (71.2 - 83.9%) -- guaranteed 2HKO after Leftovers recovery
252+ Atk Adaptability Lucario-Mega Close Combat vs. 252 HP / 0 Def Jirachi: 312-368 (77.2 - 91%) -- guaranteed 2HKO after Leftovers recovery
Not to mention that you get out of the awkward 90 speed tier that ties with a lot of things
