Quickleaf
Legend
Yeah, totally get that. DCC is a great game, and I can't wait to play.Sounds interesting, but I really feel 5e spellcasting is too reliable as it is. Adding funny misfires while still having the spell work as intended seems to work against the purpose to me.
I'm just reporting my "actual field conditions" implementing something not dissimilar to what Reynard was asking about. Not making any judgments about "the right way" – just this is the feedback that I got, I respected my players, and working towards a compromise that's fun for everyone.
EDIT: You reminded me, I ran a Freebooters on the Frontier game this weekend (PbtA + OSR + DCC-ish casting) and magic-user failed her first casting check of The Weakening Death of Youth (I forget the spell name exactly, something like that) on a wyvern, so I had her old magic-user begin to age in reverse like Merlin. It was fun in the moment, but feedback after from the magic-user player was a bit frustrated "love/hate the magic system" were her exact words.