Guys, let's make a list of the existing ways to workaround saruman hero limit to threat reduction. Which cards allow to reduce threat of more than 1 bypassing saruman negative ability?
New pillars of the king seems to work allowing to set your theat to 40
I do not think the same happens of favor of the valar and lore aragorn since both say to reduce your threat, so saruman text would apply.
Leadership frodo, galadriel and spirit beregond seems the hero cards which would pair best with saruman as they reduce threat of 1 to begin with.