GM:
Well, right now what it's doing is powering Lazarus's ritual to speed you guys to safety. That said, "truce between night and day" sounds relevant to the current situation, so it could power some different effects. Including maybe something coming from Noric's divine power rather than personal wizardly power?
Sure, groovy, but what exactly?
GM:
(other than introducing the possibility of a difficult decision, I'm not trying to pull any evil GM tricks here - we can all put ideas together to decide what the special effect(s) of this mushroom would be, if you guys want to)
No no you're cool, I'm open to suggestions, since I seem to have run out of fungal-related-suggestions myself for the moment