Oh, hey Smogon. How have you been? I think I made my last RMT in... February? But anyway, as everyone knows, there's been some metagame changes since then, so I figured I'd make a new team.
This is a team centered around a DD Dragonite sweep. Simply wear down its checks and counters, then DD up and win. It's pretty simple. As you can see, the song I've named this team after is "Infinity x Infinity" by Dead by April. The reason I chose this song is simple: Dragonite's effectiveness went down slightly due to the introduction of the Fairy type, allowing old faces to check or counter Dragonite, namely Clefable and Azumarill, while its old checks and counters are still alive and well. So, the idea is to take those Fairy-types and let them pay for the things that they've done, (eliminate them) and then send out Dragonite and let them suffer infinity times infinity.
And without further ado, here's the team:

(artwork by: LightAzumarill)
Azumarill @ Assault Vest
Ability: Huge Power
EVs: 240 HP / 252 Atk / 16 SpD
Adamant Nature
- Aqua Jet
- Play Rough
- Waterfall
- Knock Off
You just have to love this thing. Assault Vest Azumarill is the perfect glue Pokemon, helping me against threats like Greninja, Keldeo, Latios/Latias, and Dragonite, which would be rather challenging otherwise. It can even take on threats you wouldn't expect it to, like Thundurus (though it needs to be extremely healthy to do this.) It even takes a Grass Knot from Greninja, proceeding to just knock it out. Against other threats it checks (mainly Special attackers, but also Mega Charizard X and Dragonite,) it can Knock Off an opposing item to help cripple the team. You sent out Rotom-W? That's nice, I knocked off your Leftovers.
The major thing I don't like about Assault Vest Azumarill, though, is the total lack of recovery. While it handles threats like Greninja, Keldeo, and Lati@s nicely, it can only do so for a limited amount of time. Without Wish support, it doesn't seem to stay around for as long as I want it to. Regardless, though, without it, I'd have a gaping weakness to the likes of Greninja, Keldeo, and Lati@s, so it's here to stay.

(artwork by: Pyritie)
Heatran @ Leftovers
Ability: Flash Fire
EVs: 248 HP / 232 SpD / 28 Spe
Calm Nature
IVs: 0 Atk
- Stealth Rock
- Lava Plume
- Taunt
- Toxic
Heatran makes for one fantastic Stealth Rock setter, while also giving me a way to beat Clefable. So, Heatran's job is self-explanatory: Set up Rocks, take on Earthquake-less Mega Venusaur (if they have Earthquake, Mew does fine too,) and mess up the opponent's plans to use Talonflame. Taunt is a fantastic move to have on Heatran, and while I have to omit Protect in order to have both Taunt and Stealth Rock, it allows me to counter Clefable with aplomb, making Dragonite's life much easier. It also stops Mega Venusaur from Leech Seeding (the EVs are to outrun min-speed Venusaur) while Mega Venusaur won't want to be burned by Lava Plume. The main job of Toxic is to severely cripple Talonflame and Mega Charizard X, stopping them from having any kind of fun with my team.

(artwork by: Mewitti)
Mew @ Leftovers
Ability: Synchronize
EVs: 252 HP / 104 Def / 152 Spe
Impish Nature
- Taunt
- Will-O-Wisp
- Soft-Boiled
- Knock Off
I really don't understand how this thing isn't OU. It is a fucking fantastic stall-breaker and also works really well at tearing down walls in general. Not to mention that it could also be a Defogger and can also sweep... This thing is just so fucking good!
Anyway, Mew's job is simple: Tear down walls. Taunt stops them from recovering, Will-O-Wisp slowly whittles them down and can also cripple any physical attacker they have, while Knock Off is the final nail in the coffin, eliminating their items. What's your Chansey without her Eviolite? Skarmory's not doing well without Leftovers. And if you switch in your Choice Scarf user for some reason... Well, just don't. It's not a good idea. But anyway, wearing down walls (especially Skarmory) is just so fantastic for helping out a Dragonite sweep.

(artwork by: Silverbirch)
Heracross @ Heracronite
Ability: Guts
EVs: 40 HP / 252 Atk / 216 Spe
Adamant Nature
- Close Combat
- Rock Blast
- Bullet Seed
- Swords Dance
This member I'm not so sure about. It's fantastic at tearing down stall, but I already have something for that: Mew. It's powerful, but has a hard time against offense since it's slow. In addition, it's Mega Pinsir bait, so that's not helping. However, I guess there is one thing that I can say: It helps to check Azumarill, which nothing else on my team can really do (maybe Mew, but can't switch in very well) but I feel like I could get something else for that. It can be a back-up sweeper in case Dragonite goes down (for whatever reason,) but it just will not sweep against offense. And, as already stated, being Mega Pinsir bait isn't really fun, especially considering I have nothing to switch in. Mega Heracross is easily the most replaceable member since it just feels too redundant.

(artwork by: Airenu-ish)
Excadrill @ Choice Scarf
Ability: Mold Breaker
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Earthquake
- Rock Slide
- Iron Head
- Rapid Spin
What to do when you need a revenge killer and a Spinner all in one package? Get yourself an Excadrill. Seriously, this thing just works so well as a spinner, allowing Dragonite to keep its Multiscale intact, while also serving as back-up insurance against Adamant Mega Charizard X (reason I'm running Jolly) and other sweepers like Dragonite. In addition, it can also check Fairies like Clefable and Togekiss that Dragonite won't have much fun against (and just in case Heatran isn't available to do so)
Of course, as of now there's a major problem: There's way too much pressure put on Excadrill to check Mega Pinsir, and being a Choiced Pokemon, that's not going to be fun. The more pressure is on Excadrill to check Pinsir, the harder it is to spin, and therefore the harder it is to sweep with Dragonite. All in all, Excadrill is another fantastic glue Pokemon like Azumarill, but it feels like there's too much pressure on it to check stuff.

(artwork by: nepryne)
Dragonite @ Lum Berry
Ability: Multiscale
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance
- Outrage
- Extreme Speed
- Fire Punch
Endgame. Your team's been worn down, Skarmory's out of the question, and Dragonite just came out. You can't kill it in one hit, while it just dances up. Good game.
So, Dragonite basically works in the same way as it did in BW: Take advantage of Multiscale to set up and sweep, while you have Lum Berry to stop status or cure Outrage confusion. It's not uncommon to get to +2, either, so when that happens it's pretty much gg. Once stuff like Clefable is out of the way thanks to Heatran and Excadrill, Dragonite's going to have a field day. Of course, my main question is if running Thunder Punch is a good idea to be able to break through Azumarill and Togekiss, but Ferrothorn and Scizor are some key threats on my mind. Either way, love this thing. It's one fantastic Dragon Dance sweeper without taking up my Mega slot (unlike Mega Charizard X)
Conclusion
Dragonite is just... Wow, holy shit. While there are some obvious weaknesses I need to take care of (FUCKING MEGA PINSIR,) this team's been something amazing
Known Threats
Mega Pinsir - Fuck this thing. Nothing comes in even remotely safely and only Excadrill can stop a sweep. Considering Mega Heracross seems pretty redundant on this team, I'm considering replacing Mega Heracross with Mega Manectric to have another offensive check to Pinsir (and of course Talonflame)
Rotom-W - Annoying but still somewhat manageable. My best bet to beat it is to catch it with Heatran's Toxic on the switch and/or stall it out with Mew, or to keep Heracross in regular form to take advantage of the burn. Luckily, Rotom-W is terrible at stopping Dragonite from sweeping.
Importable
Code:
Azumarill @ Assault Vest
Ability: Huge Power
EVs: 240 HP / 252 Atk / 16 SpD
Adamant Nature
- Aqua Jet
- Play Rough
- Waterfall
- Knock Off
Heatran @ Leftovers
Ability: Flash Fire
EVs: 248 HP / 232 SpD / 28 Spe
Calm Nature
IVs: 0 Atk
- Stealth Rock
- Lava Plume
- Taunt
- Toxic
Mew @ Leftovers
Ability: Synchronize
EVs: 252 HP / 104 Def / 152 Spe
Impish Nature
- Taunt
- Will-O-Wisp
- Soft-Boiled
- Knock Off
Heracross @ Heracronite
Ability: Guts
EVs: 40 HP / 252 Atk / 216 Spe
Adamant Nature
- Close Combat
- Rock Blast
- Bullet Seed
- Swords Dance
Excadrill @ Choice Scarf
Ability: Mold Breaker
EVs: 4 HP / 252 Atk / 252 Spe
Jolly Nature
- Earthquake
- Rock Slide
- Iron Head
- Rapid Spin
Dragonite @ Lum Berry
Ability: Multiscale
EVs: 252 Atk / 4 SpD / 252 Spe
Adamant Nature
- Dragon Dance
- Outrage
- ExtremeSpeed
- Fire Punch