Actually your right that usage cards dont determine if it must be nerfed or not (sigfrida good example). And NR is actually easy to counter for me. I usually wish that more cards get nerfed not only Natalis. We can watch power creep comin slowly. Most bronze that are used with only a bit synergy are 10 str, with high synergy they are 15+. And golds are often more then 20 (including Natalis here).