I cant see card availability being changed, unless new, toned down variations of the old card replace some of their spots on the dreaded homogeneous items. "Fatigue" as a buzzword gave me an interesting idea: How about a encumber effect for the character once he has used the card? So even when he has a copy of ns, he cant execute it with same amount of mobility. More drastic would be a halt or a discard, losing stuff would make sense given the "wild" and exhausting action a nimble strike or conjuring a whirlwind is. Then there was the idea of proximity dependent damage similar to charge, so nimble strikes damage varies with the steps, full damage output only with all four steps taken. But nimble strike doesnt bother me that much, I think MF is the more prominent puzzle piece in a set of cards combined to negate any defense. While a drawn ns gets its damage in somewhere almost certainly, shutting down the steady MF buff for that hit would make a huge difference. Other Frenzies are more confined, harder to upkeep, less powerful, got drawbacks, are more complicated to apply. If you choose to play mage, you know the step move warrior scheme from a to z, he or his pal are going to follow up the first hit with at least one or maybe two other attacks, but this time you actually got a slight chance to face the music. Moving away from a buffed striker or trying to move him is not really an option. You cant outrun the potential second ns, even when you didn't end up with your back to the wall in a futile attempt to keep some distance. So its either block or disabling them, why i would really hate to loose that essential mean of defense, SPR.