I think Magmortar could actually use Blaze well.
With Scarf, Blaze, 125 SpAtk and Fire Blast all under his belt he could be a better late game sweeper than Heatran, and it means those switch ins to Stealth Rock would be less bothersome since they get you closer to your reap power.
With Scarf, Blaze, 125 SpAtk and Fire Blast all under his belt he could be a better late game sweeper than Heatran, and it means those switch ins to Stealth Rock would be less bothersome since they get you closer to your reap power.