Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
SS DOU -> Shadow Tag SS DOU -> Urshifu-R SS DOU -> Kartana SS DOU -> Landorus-I SS DOU -> Ally Switch SV DOU -> Flutter Mane/Basculegion-M SS Ubers -> Zacian-H SS ND UU -> Thundurus-T