Zapdos @ Rocky Helmet  
Ability: Pressure  
Shiny: Yes  
EVs: 248 HP / 240 Def / 20 Spe  
Bold Nature  
- Discharge  
- Roost  
- Heat Wave  
- Defog  

Serperior (F) @ Leftovers  
Ability: Contrary  
EVs: 56 HP / 200 SpA / 252 Spe  
Timid Nature  
IVs: 0 Atk / 30 SpA / 30 Spe  
- Leaf Storm  
- Hidden Power [Fire]  
- Substitute  
- Leech Seed  

Heatran (M) @ Leftovers  
Ability: Flash Fire  
Shiny: Yes  
EVs: 248 HP / 132 SpD / 128 Spe  
Calm Nature  
IVs: 0 Atk  
- Magma Storm  
- Earth Power  
- Protect  
- Taunt  

Greninja-Ash @ Choice Specs  
Ability: Battle Bond  
EVs: 4 Def / 252 SpA / 252 Spe  
Timid Nature  
- Hydro Pump  
- Dark Pulse  
- Water Shuriken  
- Spikes  

Tapu Lele @ Choice Scarf  
Ability: Psychic Surge  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 0 Atk  
- Psychic  
- Moonblast  
- Hidden Power [Fire]  
- Focus Blast  

Garchomp @ Dragonium Z  
Ability: Rough Skin  
EVs: 4 HP / 252 Atk / 252 Spe  
Jolly Nature  
- Stealth Rock  
- Earthquake  
- Outrage  
- Swords Dance  

This is my team around Sub-Seed Serperior. Serperior basically can beat every mon that is slower then it self by subing on the switch in and leeching it and from there on spaming sub(works even against like heatran). But loosing match ups for serp are flying types that are faster(tornadus) and like any bulky grass type like tangrowth or mega-bisaflor. With all of these mostly special atkers sp.def heatran can deal with(he's also my mega Zam check)! On Heatran 128 Speed EVs are used to outspeed Adamant Choice Band Tyranitar and Modest Magnezone. It lures in pex that gets traped by magma storm and dies after taunt into 1-2Earthpowers. Protect is nice on Heatran to see what scarfers like lando lock themself into and to get more damage off with MS or to get more leftovers recovery. Together with specs ash-greninja this offensive fire, water, grass core  works great to hit most things in the meta. Scarf Lele ensures the revenge killing of ash-gren to that this team is very weak to and also can switch on to most dragon types(zygard,even gyarados) cause it's faster even after one of Zygards D.-D. . Zapdos is the defoger who provides to take on most Landorus and Hawlucha (without edge). Garchomp is my main lead to get up stealth rock and to threaten espiacilly rain teams( to that this team is very weak to) with a Z-Outrage what ensures a KO on pelliper or Swampert. If the opponent has a lando always i would suggest leading scarf lele thought to get nice dmg on it, if it wants to rocks up. At a point of the Game if u have your Chomp out and u know that lando isn't scarf and u expect it to come in just SD and click Z-Outrage it kills even defensive Landos even after intimidate. Chomp also does well on takeing on mega-bisaflor by just SDing on it and killing it with some EQ's or Outrage's. I know it's not very balanced team in terms of special atkers(5) and physical atkers(1), but Garchomp is such a nice physicall breaker and things like sub seed serp can beat even chansey(by leeching and spamming sub). At last i want to clearify the stall matchup that is like super good cause garchomp serperior and heatran are great breakers and pressure zap demolishes it, too and the worst match up that probably is rain where u have to hope to get a kill early on with Z-Chomp, most time will have to sack a mon to mega-Pert and forcing it out with Serperior since it even lives a +1(after power up punch) Swampert's Ice Punch and hopefully just sweep with Serp.