As you might have been able to guess from the title, this teams goal is setting up a Sunny Day Heatran sweep.
Heatran has great special attack, Fire type STAB, Solarbeam, and a Ground type move that is useful for eliminating enemies that resist the Fire/Grass combo (only Flash Fire Pokemon "resist" Fire moves while the sun is up).
This team focuses mostly on paralysis in order to aid Heatran's ability to sweep. Now without further ado:
Jirachi @ Leftovers
Ability: Serene Grace
EVs: 252 HP/8 Atk/216 Def/32 Spd
Impish nature (+Def, -SAtk)
- U-turn
- Stealth Rock
- Iron Head
- Body Slam
Jirachi is my opener. Serene Grace Body Slam gives me a 60% chance to paralyze any Pokemon that is not a Ghost type. This allows me to spread status easily without being hindered by Ground types.
I chose to forgo Choice Scarf in favor of Leftovers because I like the ability to switch moves. Leftovers also allows Jirachi to survive a little bit longer.
Iron Head was chosen over Zen Headbutt for the ability to hit certain Pokemon for Neutral/Super effective damage, and the higher flinch rate.
U-turn gives me a chance to escape from cocky Magnezone that assume I am a Choice Scarf variety and also allows me to gain momentum by switching to an appropriate counter for whatever they send in.
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Blissey (F) @ Leftovers
Ability: Natural Cure
EVs: 252 Def/80 Spd/176 SAtk
Calm nature (+SDef, -Atk)
- Thunder Wave
- Softboiled
- Hidden Power [Ground]
- Flamethrower
Some of you might remember this set from Obi's paralysis team. I figured I would give it a test run on my team. It has been working pretty well and I am happy with the results.
Thunder Wave is obvious here. It spreads paralysis and is 100% accurate.
Softboiled is also obvious. I had no room for Protect and most of my Pokemon are capable of healing themselves so Wish was an inferior choice.
Hidden Power Ground works like a charm, and really shines when most of my opponents team is paralyzed. It allows me to pick off weakened and paralyzed Pokemon late in the game.
Flamethrower is for catching Scizor and also allows me to hit Gengar.
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Miltank (F) @ Chople Berry
Ability: Scrappy
EVs: 240 HP/212 Def/56 Spd
Impish nature (+Def, -SAtk)
- Body Slam
- Counter
- Heal Bell
- Milk Drink
I am probably using an inferior Pokemon here, but I just couldn't pass on the opportunity to use Miltank. I will replace her if necessary, but she has managed to carry her weight thus far.
Body Slam has a 30% chance to paralyze, and with Scrappy is no longer hindered by Ghost types.
Counter is used for lack of any better ideas. This is also why Chople Berry is used as my item instead of leftovers. Counter gives me a free shot at ruining any cocky fighting type Pokemon that thinks they can score a free KO.
Milk Drink allows me to heal off any damage from using Counter and continue to fight.
Heal Bell allows me to rid my team of status. I tend to use it a lot with Gyarados in order to alleviate the negative effects of Rest.
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Gyarados (M) @ Leftovers
Ability: Intimidate
EVs: 252 HP/252 Def/4 SDef
Impish nature (+Def, -SAtk)
- Waterfall
- Stone Edge
- Sleep Talk
- Rest
Bulky Gyarados is my answer to physical Fighting attacks. Thanks to Intimidate, Gyarados can be a formidable defensive wall even without a reliable recovery.
Waterfall is here for STAB. It also has a nice 30% flinch chance that I can abuse once my opponents team is paralyzed.
Stone Edge allows me to take on other Gyarados, and Salamence.
Rest allows me to heal myself. With Heal Bell on my side, Rest becomes a much safer move.
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Gliscor (M) @ Leftovers
Ability: Sand Veil
EVs: 252 HP/40 Def/216 Spd
Jolly nature (+Spd, -SAtk)
- Earthquake
- Taunt
- Roost
- U-turn
My favorite Gliscor set. I fell in love with it at first sight.
The Ev spread is very significant. 216 speed ev's with a Jolly nature saves me from any Swords Dance Lucario who runs through my team if Gyarados is down.
Earthquake is a useful STAB move and allows me to take down Pokemon like Lucario.
U-turn allows me to make better switches and is just a useful move in general. However I have been considering Stone Edge as added insurance against Gyarados.
Taunt is always a good move. It prevents set-up, and status and allows me to gain momentum. Roost is for recovery.
---
Heatran (M) @ Life Orb
Ability: Flash Fire
EVs: 94 HP/164 Spd/252 SAtk
Modest nature (+SAtk, -Atk)
- Earth Power
- Fire Blast
- Solarbeam
- Sunny Day
This thing can become an absolute monster. When the Sun begins to shine there are very few things that can survive two shots from this Pokemon.
Earth Power is here for eliminating other Heatran. Under the sun, nothing really resists fire except for Flash Fire Pokemon. In OU that means Heatran. If I can paralyze the enemies Heatran I can prevent it from walling me with a simple Earth Power to the face.
Fire Blast is a little iffy. It is amazingly powerful under the sun, pretty much 2hkoing anything in the game with the exception of Blissey. However it has awful PP. If my opponent somehow manages to make me lose all 8 PP my main sweeper loses his best move. I am considering Flamethrower because under the sun it should still manage to 2hko most threats.
Solarbeam allows me to ruin any Water or Rock type Pokemon that try to get in my way. With Sunny Day lowering the power of their Water attacks Heatran can successfully counter things like Starmie and Vaporeon. It also allows me to OHKO certain Tyranitar provided I Sunny Day as they switch in.
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Synergy (for those that can't see it): Jirachi and Heatran are weak to Ground. Gliscor and Gyarados are immune to Ground. Gliscor is weak to Ice, while Gyarados resists Ice. Gyarados is weak to Electric attacks, while Gliscor is immune to Electric attacks. Blissey and Miltank are weak to fighting. Gyarados and Gliscor resist fighting.
Also I realize that Sunny Day will weaken Waterfall. However I only use Sunny Day when I am near guaranteed a sweep so it should ever be an issue.
Heatran has great special attack, Fire type STAB, Solarbeam, and a Ground type move that is useful for eliminating enemies that resist the Fire/Grass combo (only Flash Fire Pokemon "resist" Fire moves while the sun is up).
This team focuses mostly on paralysis in order to aid Heatran's ability to sweep. Now without further ado:

Jirachi @ Leftovers
Ability: Serene Grace
EVs: 252 HP/8 Atk/216 Def/32 Spd
Impish nature (+Def, -SAtk)
- U-turn
- Stealth Rock
- Iron Head
- Body Slam
Jirachi is my opener. Serene Grace Body Slam gives me a 60% chance to paralyze any Pokemon that is not a Ghost type. This allows me to spread status easily without being hindered by Ground types.
I chose to forgo Choice Scarf in favor of Leftovers because I like the ability to switch moves. Leftovers also allows Jirachi to survive a little bit longer.
Iron Head was chosen over Zen Headbutt for the ability to hit certain Pokemon for Neutral/Super effective damage, and the higher flinch rate.
U-turn gives me a chance to escape from cocky Magnezone that assume I am a Choice Scarf variety and also allows me to gain momentum by switching to an appropriate counter for whatever they send in.
---

Blissey (F) @ Leftovers
Ability: Natural Cure
EVs: 252 Def/80 Spd/176 SAtk
Calm nature (+SDef, -Atk)
- Thunder Wave
- Softboiled
- Hidden Power [Ground]
- Flamethrower
Some of you might remember this set from Obi's paralysis team. I figured I would give it a test run on my team. It has been working pretty well and I am happy with the results.
Thunder Wave is obvious here. It spreads paralysis and is 100% accurate.
Softboiled is also obvious. I had no room for Protect and most of my Pokemon are capable of healing themselves so Wish was an inferior choice.
Hidden Power Ground works like a charm, and really shines when most of my opponents team is paralyzed. It allows me to pick off weakened and paralyzed Pokemon late in the game.
Flamethrower is for catching Scizor and also allows me to hit Gengar.
---

Miltank (F) @ Chople Berry
Ability: Scrappy
EVs: 240 HP/212 Def/56 Spd
Impish nature (+Def, -SAtk)
- Body Slam
- Counter
- Heal Bell
- Milk Drink
I am probably using an inferior Pokemon here, but I just couldn't pass on the opportunity to use Miltank. I will replace her if necessary, but she has managed to carry her weight thus far.
Body Slam has a 30% chance to paralyze, and with Scrappy is no longer hindered by Ghost types.
Counter is used for lack of any better ideas. This is also why Chople Berry is used as my item instead of leftovers. Counter gives me a free shot at ruining any cocky fighting type Pokemon that thinks they can score a free KO.
Milk Drink allows me to heal off any damage from using Counter and continue to fight.
Heal Bell allows me to rid my team of status. I tend to use it a lot with Gyarados in order to alleviate the negative effects of Rest.
---

Gyarados (M) @ Leftovers
Ability: Intimidate
EVs: 252 HP/252 Def/4 SDef
Impish nature (+Def, -SAtk)
- Waterfall
- Stone Edge
- Sleep Talk
- Rest
Bulky Gyarados is my answer to physical Fighting attacks. Thanks to Intimidate, Gyarados can be a formidable defensive wall even without a reliable recovery.
Waterfall is here for STAB. It also has a nice 30% flinch chance that I can abuse once my opponents team is paralyzed.
Stone Edge allows me to take on other Gyarados, and Salamence.
Rest allows me to heal myself. With Heal Bell on my side, Rest becomes a much safer move.
---

Gliscor (M) @ Leftovers
Ability: Sand Veil
EVs: 252 HP/40 Def/216 Spd
Jolly nature (+Spd, -SAtk)
- Earthquake
- Taunt
- Roost
- U-turn
My favorite Gliscor set. I fell in love with it at first sight.
The Ev spread is very significant. 216 speed ev's with a Jolly nature saves me from any Swords Dance Lucario who runs through my team if Gyarados is down.
Earthquake is a useful STAB move and allows me to take down Pokemon like Lucario.
U-turn allows me to make better switches and is just a useful move in general. However I have been considering Stone Edge as added insurance against Gyarados.
Taunt is always a good move. It prevents set-up, and status and allows me to gain momentum. Roost is for recovery.
---

Heatran (M) @ Life Orb
Ability: Flash Fire
EVs: 94 HP/164 Spd/252 SAtk
Modest nature (+SAtk, -Atk)
- Earth Power
- Fire Blast
- Solarbeam
- Sunny Day
This thing can become an absolute monster. When the Sun begins to shine there are very few things that can survive two shots from this Pokemon.
Earth Power is here for eliminating other Heatran. Under the sun, nothing really resists fire except for Flash Fire Pokemon. In OU that means Heatran. If I can paralyze the enemies Heatran I can prevent it from walling me with a simple Earth Power to the face.
Fire Blast is a little iffy. It is amazingly powerful under the sun, pretty much 2hkoing anything in the game with the exception of Blissey. However it has awful PP. If my opponent somehow manages to make me lose all 8 PP my main sweeper loses his best move. I am considering Flamethrower because under the sun it should still manage to 2hko most threats.
Solarbeam allows me to ruin any Water or Rock type Pokemon that try to get in my way. With Sunny Day lowering the power of their Water attacks Heatran can successfully counter things like Starmie and Vaporeon. It also allows me to OHKO certain Tyranitar provided I Sunny Day as they switch in.
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Synergy (for those that can't see it): Jirachi and Heatran are weak to Ground. Gliscor and Gyarados are immune to Ground. Gliscor is weak to Ice, while Gyarados resists Ice. Gyarados is weak to Electric attacks, while Gliscor is immune to Electric attacks. Blissey and Miltank are weak to fighting. Gyarados and Gliscor resist fighting.
Also I realize that Sunny Day will weaken Waterfall. However I only use Sunny Day when I am near guaranteed a sweep so it should ever be an issue.