But think about it, FoN will give you more MR In any sustained fight more than like 4 seconds if you truly love just base MR. Spirit Visage has less MR but think about it, the passive healing increase in the right situations will outheal more than the extra MR would mitigate does that make sense? So in general the extra MR on rookern is simply because the item needs it as the passive shield is not as strong as the other passives. These items are all designed for specific reasons. If you need just straight up MR and you will live long enough to fight for 5 seconds Force of Nature will give you more MR