Lucario

Lucario replaces Mega Floette from the original build as a more accessible flex slot. Choice Scarf makes it the fastest Pokemon on the team outside Trick Room, enabling a Lucario plus Oranguru lead where Final Gambit removes a key threat while Oranguru sets up Trick Room in the same turn. Inner Focus prevents Fake Out from interrupting Final Gambit or the Trick Room setup. Adamant nature maximizes Final Gambit damage, which scales directly with HP. Stone Edge targets Charizard, Close Combat pressures King Gambit and Tyranitar, and Meteor Mash hits Floette. Lucario also closes out games after Trick Room expires.