Cure Disease

If you've got a Disease on one of your prized Commanders or Mages and nobody to heal it for you, fret not! Cure Disease will fix that right up!

It's a Level 4 Thaumaturgy Ritual that requires nature 44 to cast, and that consumes 5naturegem on use. It's not very efficient, but it's an emergency option.

What are some other options? Well:

The severity of Disease varies from guy to guy. If it's on your Pretender, then you're more worried about the other Afflictions it can cause. If it's on someone else, then you probably shouldn't care TOO much, unless your guy has a very-rare Magic spread (such as a 10% random) or something else.