Here's a new team and it needs some rating it's nothing fancy but it includes some of favorite pokemon.




Emperor@Leftovers
Calm/Torrent
248 HP / 44 Def / 216 SpD
Scald
Stealth Rock
Roar
Protect

Empoleon is my special wall, with it's typing and EVs spread it can survive lots of hits, Scald is the primary STAB that lets Empoleon wall some physical threats because of the burn, Stealth Rocks is a move that defensive Empoleon must have, since it will most time survive hits, Roar is to phaze out setters like Reuniclus and keeps damaging thanks to the rocks and Protect lets me scout for SE moves and rack Leftovers healing.



Nightingale@Toxic Orb
Impish/Poison Heal
252 HP / 184 Def / 72 Spe
Toxic
Earthquake
Protect
Facade

Gliscor is Empoleon best partner, it takes everything Empoleon is weak to while Empoleon does that to Gliscor, Toxic is to stall walls that aren't immune, while Earthquake is the primary STAB, Facade is here to deal damage to pokemon immune to Earthquake and Protect lets Gliscor rack healing of its ability.



Seer@Leftovers
Impish/Magic Bounce
248 HP / 200 Def / 60 Spe
Toxic
Roost
Night Shade
U-Turn

Xatu is here to bounce things back and stall my opponents, Roost lets him heal and continue in play bouncing hazards, Toxic is to stall the opposing pokemon, Night Shade is here to cause some damage and break Substitute and U-turn lets me scout for pokemon Xatu can't stall.



Melody@Expert Belt
Naive
56 Atk / 252 SpA / 200 Spe
Relic Song
Close Combat
Thunder
HD Ice

I had a good experience with mixed Meloetta in my last team so I'm using it again, Relic Song lets Meloetta transform while it is a powerful STAB, with the predominance of Rain in OU, Thunder is used here thanks to the 60% chance of paralysis and 2OHKOS Jellicents wich stop Meloetta from transforming, Close Combat is to spam it in Pirouette form and HD Ice gives a pretty good coverage against Dragon- types.



Ying@Choice Scarf
Adamant
252 Atk / 4 Def / 252 Spe
Outrage
Dragon Claw
Fusion Bolt
Ice Beam
What do you do when a pokemon has a devastating attack power but hasn't speed, you slap a Choice Scarf on it, thanks to the EVs spread the damage output is maximized and the speed is tremenduos, Outrage is the primary STAB, while Dragon Claw is used not to be confused, Fusion Bolt takes care Water- Flying- types and causes considerable damage in Steel- types, and Ice Beam is a coverage move against Ground- and Grass- pokemon.



Eon@Choice Specs
Timid
252 SpA / 4 SpD / 252 Spe
Draco Meteor
Psyshock
HD Fire
Surf
The EVs spread of Latios makes him really fast and hit hard, Draco Meteor is the primary STAB OHKO most pokemon, Psyshock is here as the secondary STAB and a Keldeo check, HD Fire takes out most Steel types and Surf is a reliable coverage move taking Ground- and Fire- types out.