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Rayquaza-ExtremeSpeed + Swords Dance|Salamence-Dragon Dance + Fire Blast|Scizor|Norm Arceus / Poison Arceus|Blissey 252 Def and SpDef|Palkia 4 HP and 252 SpDef.
Crappy but I want to work on it. Rayquaza and Salamence because I like them and they are good partners. Scizor to take a Draco Meteor/Dragon move. Norm Arceus for getting rid of weakened Rayquaza/other things. Poison Arceus to soak up Toxic Spikes. Blissey for a wall. Palkia to take Kyogre's Water Spouts.
Thanks. I just wish I could do as much work as you. I suck at writing analyses. Well, mainly the battling and testing for partners / counters part of it.