Toxic pdon checks *everything
Mega-Scizor U-turns out of checks (Ho-oh, P-Don) into Primal Kyogre. It has SD to check support Arceus  and Z-Geoxern but can be replaced by superpower if Ferrothorn becomes an issue. Min speed to get slow u-turns.
Primal Kyogre destroys everything by coming in via U-turn. Has toxic to wear down pdon.
Scarf Yveltal provides extra U-turn support and checks Lunala and Marshadow. Foul play checks ekiller, archeus-ghost , solgaleo etc
Arceus Fairy provides defog support and checks Yveltal, spreads toxic (replace by stone edge if ho-oh is an issue)
Father can set up on bulky steel types and just win. Provides additional support against physical attackers like RP groudon.