When I finally bought the RMSS(RMFRP) books, this chart became my goto for my RM2(RMC) games ever after!
It did open up quite the higher range of Spell Fumbles because of the extra nega-mods, though, LOL.
It definitely helps heighten critical encounters where the need for time isn’t available to a Caster! Do they push the safety net boundaries of casting within their means in order to save the day?
They choose!
It helped that I house ruled adding one’s Magic Realm stat as part of one’s Base Attack Roll(called SCSM in RMSS/RMFRP) to actually show how powerful a Spelluser actually was in their Art vs Profession Level alone - which I continue to hate this limitation to this day…”ho hum, we’re all clones with only our level to show the differences of our powers.”
To wit, I do enjoy High Fantasy but logically there are no ways to prove one is gifted in RAW for spell casting…absolutely none, and I fixed that with the HR above.
Enjoy using it like I did.