Thank you!
That's just a way of saying that you can't cast spells with 1 die in the mana pool. It's mostly intended to make specializing in 1/2 mana pools have a bit of a downside (you can't use spells of other mana types that you have 1 in), but can also of course apply to a more depleted pool. In that way, I would recommend to a player to think about the result of their spell, in that, if they want to do fire magic, obviously a red thing, but has only 1 red die, they'll need to either reskin it or provide a bit of an argument as to how their fire magic's intent is something more aligned with a different mana pool.
Hope that helps! If I revisit Zauberspiel like I did Anime Messerspiel, I'm considering a way to burn that last 1 die in a pool, since I can see it to be a bit annoying for players occasionally, since the only way to get rid of the die is to roll it currently.
Let me know if you end up running it! That'd be very exciting. You can reach me in a variety of ways, all on https://sagedamage.itch.io/. I personally really want to run something in Kamigawa: Neon Dynasty.
