Ok Brian, you're right about the 2 dice/3 dice thing. Thanks for that.
But on stacking, I'm pretty sure it works the way I was saying.
Gut Magic spells have lasting effects that can be dispelled like Remains in Play. But they're not Counted as Remains in Play.
So butchers still get the one attempt per spell, per turn regardless if there is already one or more floating out there (kinda like comet)