Pokemon Team:
Ferrothorn @ Leftovers (Lead)
Ability: Iron Barbs
EVs: 252 HP, 252 Def, 6 SpD
Nature: Relaxed [+Def, -Spe]
-Gyro Ball
-Stealth Rock
-Curse
-Leech Seed
This is my physical wall with a bit of SpD investment as well. My nature is -Spe so I can do more damage with gyro ball. I dont expect ferro to outspeed much anyway. He is my lead to set up stealth rock. Leech seed is always great on ferro fr sapping health. Finally, I decided to try curse on ferro. It gives extra defense and lets gyro do even more damage if i need it. Ive heard of a set like this, but Ive never actually seen someone use it, so I thought Id try it.
Haxorus @ Choice Band
Ability: Mold Breaker
EVs: 252 Atk, 252 Spe, 6 HP
Nature: Jolly [+Spe, -SpA]
-Outrage
-Earthquake
-Brick Break
-Double Chop
This is my "Im tired of you being alive so Im going to OHKO you" poke. Outrage with STAB + Choice Band on a poke with 140+ base Atk is just overkill. Earthquake is so steels cant wall him. The other moves are just filler. Double Chop and Brick Break are the only other 2 moves that can even be of any use really.
Starmie @ Choice Scarf
Ability: Natural Cure
EVs: 252 SpA, 252 Spe, 4 Hp
Nature: Timid [+Spe, -Atk]
-Psychic
-Surf
-Ice Beam
-Thunderbolt
This is to give my team more speed and to act as a revenge killer. Psychic is for tough fighting types and is STAB. Surf is STAB. Ice Beam is for powerful dragons that Id rather not have destroying my team. And thunderbolt is a good move, especially against water types. I thought of using rapid spin over ice beam, but I dont think my team is weak enough to SR to need it.*
Heatran @ Leftovers
Ability: Flash Fire
EVs: 252 HP, 252 SpD, 4 Def
Nature: Calm [+SpD, -Atk]
-Lava Plume
-Earthpower
-Toxic
-HP [Ice]
This is my special wall. Air balloon could also be a good option, but i think lefties would be more helpful. Lava Plume is to stop physical attqckers from destroying me because of the 30% burn rate. Earthpower is just plain covere, along with HP [Ice]. Toxic is here to slowly kill off walls and to sort of toxic stall.*
Thundurus @ Life Orb
Ability: Prankster
EVs: 252 SpA, 252 Spe, 6 Def
Nature: Timid [+Spe, -Atk]
-Thunderbolt
-HP Ice
-Nasty Plot
-Focus Blast
This is my main Sweeper. Thunderbolt is deadly STAB. HP Ice let's me cover things like ground or dragon that resist electric. Nasty Plot is to set up and tear throgh teams. Focus blast is just more coverage and for things like tyranitar so my sweep hopefully wont be stopped.*
Conkeldurr @ Flame Orb
Ability: Guts
EVs: 252 Atk, 138 SpD, 120 HP
Nature: Adamant [+Atk, -SpA]
-Mach Punch
-Drain Punch
-Stone Edge
-Bulk Up
This poke is my main counter to excadrill. With a weakness to fighting, and mach punch being priority, this can potentially destroy him. Im not sure if I should put lefties or flame orb. Lefties would make me need ti change one of my other pokes' items, and i think flame orb would be decently good. With a guts boost, he can dominate if statused. And he can gain some health back with drain punch. Stone edge is for flyig types who are trying to stop Conkeldurr's *fury and raw power. Also, I realise bulk up with flame orb isnt usually a great combination, but I think it would work well with this set. If you think otherwise, please say so.*
Any criticism is appreciated.

Ferrothorn @ Leftovers (Lead)
Ability: Iron Barbs
EVs: 252 HP, 252 Def, 6 SpD
Nature: Relaxed [+Def, -Spe]
-Gyro Ball
-Stealth Rock
-Curse
-Leech Seed
This is my physical wall with a bit of SpD investment as well. My nature is -Spe so I can do more damage with gyro ball. I dont expect ferro to outspeed much anyway. He is my lead to set up stealth rock. Leech seed is always great on ferro fr sapping health. Finally, I decided to try curse on ferro. It gives extra defense and lets gyro do even more damage if i need it. Ive heard of a set like this, but Ive never actually seen someone use it, so I thought Id try it.

Haxorus @ Choice Band
Ability: Mold Breaker
EVs: 252 Atk, 252 Spe, 6 HP
Nature: Jolly [+Spe, -SpA]
-Outrage
-Earthquake
-Brick Break
-Double Chop
This is my "Im tired of you being alive so Im going to OHKO you" poke. Outrage with STAB + Choice Band on a poke with 140+ base Atk is just overkill. Earthquake is so steels cant wall him. The other moves are just filler. Double Chop and Brick Break are the only other 2 moves that can even be of any use really.

Starmie @ Choice Scarf
Ability: Natural Cure
EVs: 252 SpA, 252 Spe, 4 Hp
Nature: Timid [+Spe, -Atk]
-Psychic
-Surf
-Ice Beam
-Thunderbolt
This is to give my team more speed and to act as a revenge killer. Psychic is for tough fighting types and is STAB. Surf is STAB. Ice Beam is for powerful dragons that Id rather not have destroying my team. And thunderbolt is a good move, especially against water types. I thought of using rapid spin over ice beam, but I dont think my team is weak enough to SR to need it.*

Heatran @ Leftovers
Ability: Flash Fire
EVs: 252 HP, 252 SpD, 4 Def
Nature: Calm [+SpD, -Atk]
-Lava Plume
-Earthpower
-Toxic
-HP [Ice]
This is my special wall. Air balloon could also be a good option, but i think lefties would be more helpful. Lava Plume is to stop physical attqckers from destroying me because of the 30% burn rate. Earthpower is just plain covere, along with HP [Ice]. Toxic is here to slowly kill off walls and to sort of toxic stall.*

Thundurus @ Life Orb
Ability: Prankster
EVs: 252 SpA, 252 Spe, 6 Def
Nature: Timid [+Spe, -Atk]
-Thunderbolt
-HP Ice
-Nasty Plot
-Focus Blast
This is my main Sweeper. Thunderbolt is deadly STAB. HP Ice let's me cover things like ground or dragon that resist electric. Nasty Plot is to set up and tear throgh teams. Focus blast is just more coverage and for things like tyranitar so my sweep hopefully wont be stopped.*

Conkeldurr @ Flame Orb
Ability: Guts
EVs: 252 Atk, 138 SpD, 120 HP
Nature: Adamant [+Atk, -SpA]
-Mach Punch
-Drain Punch
-Stone Edge
-Bulk Up
This poke is my main counter to excadrill. With a weakness to fighting, and mach punch being priority, this can potentially destroy him. Im not sure if I should put lefties or flame orb. Lefties would make me need ti change one of my other pokes' items, and i think flame orb would be decently good. With a guts boost, he can dominate if statused. And he can gain some health back with drain punch. Stone edge is for flyig types who are trying to stop Conkeldurr's *fury and raw power. Also, I realise bulk up with flame orb isnt usually a great combination, but I think it would work well with this set. If you think otherwise, please say so.*
Any criticism is appreciated.