S-Haxorus (6EX+), Meloetta (6EX+), S-Stoutland (2/5)
Was not expecting to post these types of numbers, but I guess it just shows you how good Steven is for this game mode.
Some MPR grind is needed obviously, at least 1 Super Effective MPR and at least 1 Mystery MPR. Ideally we want +10 PMUN for the last 2 Nate attacks. Meloetta’s TM can also help out with this, the MPR is way less likely though at 20%.