Introductions simply doesn’t really matter. Wacky topic names don’t matter either. Can’t be bothered with them lol. This team has a solid 74% win rate so far but I am certain that it is lacking in some places. As a note, I am a direct offensive player, with the random tank thrown in.
Bold is for changes.
Mamoswine @ Life Orb
Snow Cloak
Adamant
4 HP / 252 Atk / 252 Spe
~Stealth Rock
~Ice Shard
~Earthquake
~Toxic
I do not like suicide leads, especially after I discovered that Choice Scarf Serene Grace Jirachi’s Iron Head only leave the leads 60% chance of setting up SR. I rather wanted a rarer lead (Mamo is used only 0.71% of the time compared to Metagross’ 8.35%) that will most likely not fall after the first two rounds. I have used this lead, and it either sets up SR or KOs an opponent 95% of the time.
This Mamo lead is actually taken off somebody else’s RMT, but I think that it is really effective. EQ + Ice Shard is essentially compulsory on Mamo. It can OHKO Metagross, Tyranitar and Heatran leads. Against Azelf and Aerodactyl, they will get pwned by Ice Shard. Against Speed Boost leads, I will use Ice Shard, as it will 2HKO Yanmega (hoping for hypnosis to miss) and possibly OHKO Ninjask. Against other leads like Infernape and Jirachi that can OHKO Mamo, I either switch to Swampert or Heatran. Against more defensively leads like Hippowdon, Swampert, Bronzong etc, I will set up SR. Toxic is to cripple any bulky waters who decide to switch in/stay in on me after I SR or attack.
Also, if Tran falls, Mamo will be my 2nd counter to the common dragons, Flygon/Mence/Nite/Latias etc., which I can all OHKO except for Latias, which will be after SR damage.
Gengar @ Choice Specs
Levitate
Timid
4 Def / 252 SpA / 252 Spe
~Shadow Ball
~Thunderbolt
~Focus Blast
~Trick
Standard Trick Specs Gengar. All three moves are pretty standard for coverage. Trick is always useful when a Blissey or family switches into Gar. It can score plenty of OHKOs within the top 20 non-bulky pokemon. Normally I will switch him in after a kill if Tran or Mamo is not in the position to revenge kill the opponent. Then, I will blast off a STAB Specs Shadow Ball.
Heatran @ Choice Scarf
Flash Fire
Naïve
4 HP / 252 SpA / 252 Spe
~Fire Blast
~Earth Power
~Explosion
~Dragon Pulse
Another Standard. Scarf Heatran is, as the analysis says, the ultimate revenge killer. It is the only thing that keeps me from sweeped by the likes of Scizor and Lucario, while retaining the ability to revenge kill a multitude of Dragons, slow sweepers like Empoleon and Rhyperior, and the feared Blissey with Explosion if Scizor fainted. For some, Scarfers like Scarfgon or ScarfCross, but for me, I feel that Scarftran is definitely the best. Its ability to both attack Special and OHKO Blissey is a big plus, and I have been using Scarftran ever since D/P came out. Dragon Pulse over HP Ice to hit Kingdra.
Scizor @ Life Orb
Technician
Adamant
32 HP / 252 Atk / 224 Spe
~Swords Dance
~Bullet Punch
~X-Scissor
~Roost
After the ban of Chomp, SDScizor is arguably the best Swords Dancer in the metagame. It has completely no difficulty to find a turn to SD, and 130 Atk + 252 EV + Adamant Nature + STAB + Technician + Life Orb + Swords Danced Bullet Punch is definitely the strongest priority move ever created. Its ability to pick off walls and tanks with 60-70% health is just amazing, and this thing is the reason that 6-0s and 5-0s are as common for me as losses. X-Scissor is there to hit bulky waters after a few SDs. Roost is simply to restore health taken away through Life Orb damage.
Might consider another Swords Dancer / Stat-uper here. Lucario? Any suggestions?
Celebi @ Life Orb
Natural Cure
Modest
232 HP / 244 SpA / 32 Spe
~Thunder Wave
~Leaf Storm
~Psychic / (HP Fire?)
~Recover
Tinkerbell Celebi, an offensive variation that is quite uncommon. The EV spread is taken right from the analysis, maximizing defence while keeping the Special Attack strong, retaining the ability to outrun Jolly Tar, preventing it from Pursuiting Celebi to death. Thunder Wave is there to cripple any switch-ins after I send Celebi in for a potential OHKO (Swampert, Suicune etc.) Leaf Storm is mandatory and I prefer Psychic over HP Fire because it can OHKO Gengar, Heracross, Infernape etc. Scizor and Forretress are hopefully taken care of by Heatran. Rest was changed to Recover so Celebi will not get trapped and set-up against Pursuiters.
Swampert @ Leftovers
Torrent
Impish
252 HP / 40 Atk / 216 Def
~Earthquake
~Avalanche
~Stone Edge / (Waterfall?)
~Roar
Physically Defensive Swampert that, in my opinion, fits together with the team very well. This can stop most physical attacker dead in their tracks. Roar and beat plenty of Baton Passers and Stat-upers like Ninjask and Gyarados etc. Most people will be expecting Waterfall on a physical Swampert, which is the reason why I am using Stone Edge instead. It already has EQ for respectable STAB and Stone Edge may be able to score surprising OHKOs on Gyarados and other flying types which are neutral to Avalanche. Roar is also there to accumulate SR damage.
Please R&R =)
Bold is for changes.

Mamoswine @ Life Orb
Snow Cloak
Adamant
4 HP / 252 Atk / 252 Spe
~Stealth Rock
~Ice Shard
~Earthquake
~Toxic
I do not like suicide leads, especially after I discovered that Choice Scarf Serene Grace Jirachi’s Iron Head only leave the leads 60% chance of setting up SR. I rather wanted a rarer lead (Mamo is used only 0.71% of the time compared to Metagross’ 8.35%) that will most likely not fall after the first two rounds. I have used this lead, and it either sets up SR or KOs an opponent 95% of the time.
This Mamo lead is actually taken off somebody else’s RMT, but I think that it is really effective. EQ + Ice Shard is essentially compulsory on Mamo. It can OHKO Metagross, Tyranitar and Heatran leads. Against Azelf and Aerodactyl, they will get pwned by Ice Shard. Against Speed Boost leads, I will use Ice Shard, as it will 2HKO Yanmega (hoping for hypnosis to miss) and possibly OHKO Ninjask. Against other leads like Infernape and Jirachi that can OHKO Mamo, I either switch to Swampert or Heatran. Against more defensively leads like Hippowdon, Swampert, Bronzong etc, I will set up SR. Toxic is to cripple any bulky waters who decide to switch in/stay in on me after I SR or attack.
Also, if Tran falls, Mamo will be my 2nd counter to the common dragons, Flygon/Mence/Nite/Latias etc., which I can all OHKO except for Latias, which will be after SR damage.

Gengar @ Choice Specs
Levitate
Timid
4 Def / 252 SpA / 252 Spe
~Shadow Ball
~Thunderbolt
~Focus Blast
~Trick
Standard Trick Specs Gengar. All three moves are pretty standard for coverage. Trick is always useful when a Blissey or family switches into Gar. It can score plenty of OHKOs within the top 20 non-bulky pokemon. Normally I will switch him in after a kill if Tran or Mamo is not in the position to revenge kill the opponent. Then, I will blast off a STAB Specs Shadow Ball.

Heatran @ Choice Scarf
Flash Fire
Naïve
4 HP / 252 SpA / 252 Spe
~Fire Blast
~Earth Power
~Explosion
~Dragon Pulse
Another Standard. Scarf Heatran is, as the analysis says, the ultimate revenge killer. It is the only thing that keeps me from sweeped by the likes of Scizor and Lucario, while retaining the ability to revenge kill a multitude of Dragons, slow sweepers like Empoleon and Rhyperior, and the feared Blissey with Explosion if Scizor fainted. For some, Scarfers like Scarfgon or ScarfCross, but for me, I feel that Scarftran is definitely the best. Its ability to both attack Special and OHKO Blissey is a big plus, and I have been using Scarftran ever since D/P came out. Dragon Pulse over HP Ice to hit Kingdra.

Scizor @ Life Orb
Technician
Adamant
32 HP / 252 Atk / 224 Spe
~Swords Dance
~Bullet Punch
~X-Scissor
~Roost
After the ban of Chomp, SDScizor is arguably the best Swords Dancer in the metagame. It has completely no difficulty to find a turn to SD, and 130 Atk + 252 EV + Adamant Nature + STAB + Technician + Life Orb + Swords Danced Bullet Punch is definitely the strongest priority move ever created. Its ability to pick off walls and tanks with 60-70% health is just amazing, and this thing is the reason that 6-0s and 5-0s are as common for me as losses. X-Scissor is there to hit bulky waters after a few SDs. Roost is simply to restore health taken away through Life Orb damage.
Might consider another Swords Dancer / Stat-uper here. Lucario? Any suggestions?

Celebi @ Life Orb
Natural Cure
Modest
232 HP / 244 SpA / 32 Spe
~Thunder Wave
~Leaf Storm
~Psychic / (HP Fire?)
~Recover
Tinkerbell Celebi, an offensive variation that is quite uncommon. The EV spread is taken right from the analysis, maximizing defence while keeping the Special Attack strong, retaining the ability to outrun Jolly Tar, preventing it from Pursuiting Celebi to death. Thunder Wave is there to cripple any switch-ins after I send Celebi in for a potential OHKO (Swampert, Suicune etc.) Leaf Storm is mandatory and I prefer Psychic over HP Fire because it can OHKO Gengar, Heracross, Infernape etc. Scizor and Forretress are hopefully taken care of by Heatran. Rest was changed to Recover so Celebi will not get trapped and set-up against Pursuiters.

Swampert @ Leftovers
Torrent
Impish
252 HP / 40 Atk / 216 Def
~Earthquake
~Avalanche
~Stone Edge / (Waterfall?)
~Roar
Physically Defensive Swampert that, in my opinion, fits together with the team very well. This can stop most physical attacker dead in their tracks. Roar and beat plenty of Baton Passers and Stat-upers like Ninjask and Gyarados etc. Most people will be expecting Waterfall on a physical Swampert, which is the reason why I am using Stone Edge instead. It already has EQ for respectable STAB and Stone Edge may be able to score surprising OHKOs on Gyarados and other flying types which are neutral to Avalanche. Roar is also there to accumulate SR damage.
Please R&R =)