Do you think this is something that could be resolved with better phrasing on the rulings document? I don’t think this affects any cards besides Prynn, and I think the rulings doc is a better place for card-specific clarifications than the FAQ in this thread.
I think the 3rd Prynn ruling is the source of much of the confusion:
If she has exactly two time runes, she CAN use her max level ability to trash a unit. If she does, she then immediately dies from fading, then the trashed unit returns to play.
If instead of “dies from fading”, it said “fades away”, that would help. Even better if the next sentence clarifies that this does not trigger her midband, because she didn’t “die from fading” as defined in the previous ruling.