Just to refresh,
The discussion was how does unseen voices work as a deception, if they are figments and everybody who hears them realized that they are fake.Illusions can be very effective, but it is possible for opponents to see through or otherwise sense the deception by way of Sensing tests. There are two kinds of illusions: figments and true illusions.
Figments are the weakest sort of illusion magic. They can interact with any senses—images, sounds, sensations and more can all be
created by figments. However, figments are obviously illusory, or easily detected as an illusion; any interaction with a figment reveals its
nature. They are typically used to entertain or enhance other actions. No special tests or abilities are needed to sense their status as illusions.
The problem I find is that most figment spells don't seem to work as figments. Only one of them seem to fit the "obviously illusory" category, and only one seems to fit the "easily detected as an illusion" category. The other three seem to be a third category of "not obviously illusory, but almost impossible to interact with or have other weird rules for how they are seen through". Despite the paragraph above saying "No special tests or abilities are needed to sense their status as illusions", several of the spells have clearly stated special tests to end the spell effects. I find the whole thing very confusing and contradictory.
There are only 5 figments in the spell list, Lets look at the list.
Cloak: so this one works, more or less. My understanding is that you get +3 to your stealth tests, until you are seen, but once seen you loose the bonus. The target does not have to "sense" the spell, just to succeed in rolling higher than your Stealthy Stride (which will often, but not always be lower than a first circle sensing test difficulty number). After which point the effect is seen as "obviously illusory" and the effect goes away.
Disaster, I don't see this working as a figment. Reading the text of the spell, it can clearly distract somebody for up to Rank Rounds. So it seems to me that it can't be too obviously fake. The only thing I can think of is that figments are exposed when interacted with, and Disaster creates an effect that seems far away, and it is very hard to interact with a barn burning a mile away. Thus you don't realize the Disaster is a fake until you get closer to the location (or the duration expires - or your attention is drawn to more urgent matters). But the point is that until your attention is returned to closer matters, the disaster does not seem to be obviously a fake.
Fun With Doors: This spell makes perfect sense as a figment to me. You see the doors, they are NOT obviously fake until you try to interact with it such as open it. Then they are revealed to be obviously fake. But the key here is that they are not obviously fake until you touch it. I guess one big consequence of this being a Figment instead of an Illusion is that a master can't use Manipulate Reality to remove the illusion keyword and create or remove real doors (which would have been super cool).
Unseen Voices: This does not make sense to me as a figment at all. It seem to have none of the markers of a figment as defined above. As far as I can tell, this is not meant to be obviously fake. Also it does seem possible to interact with Unseen Voices (one could converse with the voices). And as far as I can tell, the caster can use mimic voice though the spell, and the targets could be fooled by the mimiced voices. How can one be fooled by a mimiced unseen voice if the spell is obviously fake? It makes no sense at all unless the spell is not obviously fake even if interacted with.
Clarion Call: This also makes no sense as a figment at all. A loud voice gives a command. If the test succeeds, you have to obey the command. If you want to resist the command, you need to make a WIL test vs the effect step. If you don't succeed in the WIL test, you have to obey the voice. So how does this work in practice? Can the targets just say "this is an obvious figment so I am going to ignore the voice"? is the case that it is an obvious figment, but they are compelled to obey the voice anyway, even knowing that it is a figment? Or do they not realize it is a figment unless they make their WIL test, and it is the making of the WIL test that makes them realize the voice is a figment and can be ignored? I don't understand this at all! But the effect of having to obey the voice seems a very real effect.
So like I said, Clarion Call and all the other spells, what makes these spells figments? Is the voice a figment but the compulsion is real? Why do these spells have a figment tag? In what ways would the spells be, or behave differently if they did not have the figment tag? Should one ignore the figment tag if it seems to contradict the spell text? Or ignore the spell text if it seems to contradict the figment tag?