Blaziken

Focus Sash guarantees Blaziken survives its first hit and gets to use Coaching, which hands an ally an immediate plus one Attack and Defense without a setup turn of its own. Modest with maxed Special Attack and Speed means Heat Wave and Aura Sphere still hit hard even though the set is built around supporting partners like Eelektross-Mega and Garchomp. Speed Boost lets it eventually outrun Mega Aerodactyl, though it loses to base 130 Speed threats at only plus one. Even when its own damage is secondary, Blaziken sticks around a turn or two dishing out coaching boosts before going down.