In my most recent RMT, I posted a somewhat new LeadTran set. This one utilizes Heatran's bulkier side, great offensive prowess, decent typing and decent movepool. I decided to post this one since it's doing quite well on my upcoming, "Dresses are better than Bells" team.
Heatran (M) @ Lum Berry
Ability: Flash Fire
EVs: 252 HP/20 Spd/236 SAtk
Modest nature (+SAtk, -Atk)
- Magma Storm
- Earth Power / Explosion
- Stealth Rock
- Will-o-wisp
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Heatran is a great Pokemon to lead off the game, we all know that; however, this set allows Heatran to KO an even wider variety of leads without much effort. Magma Storm beats most Focus Sash leads, namely Roserade and Smeargle, that make an attempt to setup on Heatran. Though the 70% accuracy is a bit off putting, it pays off when the opposing lead can't harm Heatran, or setup its entry hazard. If the accuracy is too much of a problem, Fire Blast is a great alternative if you have a trapper that can revenge the opposing lead - Flamethrower can be used as well if you're really paranoid about a miss, but the drop on power usually isn't work it.
Earth Power is one of Heatran's bread-and-butter moves, as it covers a lot of what its Fire STAB can't hit. Explosion on the other hand works nicely with Magma Storm if something along the lines of Blissey decides to switch in to sponge Heatran's attacks. Explosion also helps ease the prediction when switching another Pokemon in. Will-o-Wisp is another great move on Heatran, allowing it to cripple powerhouses such as Swampert, Hippowdon, Tyranitar, and Kingdra for the rest of the game. Toxic is a decent option if you don't fear Heatran getting beaten by Earthquakes from opposing leads.
The EVs allow Heatran to survive a decent amount of attacks, namely Superpowers from Jolly Breloom, and Adamant (unboosted) Scizor. Heatran outplaces LeadGross with 20 EVs in Speed, as well as any Tyranitar, Scizor, or Breloom that doesn't invest much in Speed. The can be raised to Speed EVs to 136 in order to outspeed Adamant Tyranitar, and the "Standard" Swords Dance Scizor spread, though the loss in bulk gives Life Orb Gengar a decent chance (44% as opposed to 0%) of OHKOing Heatran from full health (an uncommon lead, but a common revenge killer). Honestly, I haven't found much use for the extra Speed since I run Scizor and Magnezone as revenge killers for both Tyranitar and Scizor respectively.
If anyone decides to use this Heatran, it's recommended that you pair it with Tyranitar, as it can remove most of what tries to revenge Heatran from play, or setup on it; however, Heatran and Tyranitar share a Fighting and Ground weakness. For this reason, Gyarados and Celebi are great partners for Heatran - Celebi and Heatran can for the [defensive] CeleTran combo while Gyarados can setup a Dragon Dance or two on what kills off Heatran. Zapdos can also become a problem since Heatran lacks Leftovers recovery, which makes Flygon and Dragonite great options due to the drop in usage of Hidden Power Ice on Zapdos (the latter can handle Hidden Power Ice variants with ease thanks to Light Screen, Roost and Specially defensive side). With Metagross leads, you'll almost always have to worry about Explosion decimating your switch in. Bronzong actually does a nice job at sponging hits directed at Heatran. Dual Screen Bronzong can help setup another sweeper, and it can setup on most of what Heatran can't handle.