Shadow Heatran

Shadow Heatran is a top tier Fire attacker, boasting not only excellent DPS, but also great survivability. Thanks to its impressive bulk and seemingly endless resistances, Shadow Heatran can can sometimes stick around on the battlefield approximately twice as long compared to glassier Shadow Fire-type options such as Chandelure or Darmanitan.

Best PvE Moveset

• Fire Spin and Magma Storm* is Heatran’s optimal set.
• Fire Blast is a bit behind in DPS, but also less efficient as a 1-bar move. 
• Bug Bite is the worse move in the situations where Heatran is useful.
• Iron Head is better for attacking Fairy-types.
• Stone Edge has no role on gym or raid offense.
• Flamethrower is objectively worse than Magma Storm*, but it's a fine non-Elite substitute with a close overall performance