Hey nice team but if Gengar is gone fighting types can pretty much run through this team I think it would be best if you put Gliscor in place of Ferrothorn or Heatran. This will give you another fighting resist and also Gliscor causes so many switches and can toxic stall a lot of pokemon to death with endless Toxic healing, Sub and Protect. Not to mention Gliscor counters most Terrakion sets.
Gliscor set:
...
Gliscor @ Toxic Orb
Trait: Poison Heal
EVs: 252 HP / 184 Def / 72 Spe
Impish Nature
- Substitute
- Protect
- Earthquake
- Toxic