https://pokepast.es/be64781a16569a55 saw the Shadow Rider video and figured Id send what Im using. AV Kart in max lives Scarf Spout Kyogre; and still creeps stuff like Specs Kyogre/Modest Xerneas. AV Yveltal is a great check to Shadow Caly (since ya dont lose if it subs):
+2 252 SpA Life Orb Celebi Max Starfall vs. 252 HP / 252+ SpD AV Yveltal: 330-390 (72.3 - 85.5%)
rest should be self explanatory, hf