Despite the spell’s name, the mage is not forgotten by those who witness her passing or otherwise interact with her. Rather, they sense nothing special about her and so are as apt to dismiss her presence as they are that of anyone else. On the street, they take no more notice of her than they would were she just a Sleeper, and are likely to forget ever having seen her soon thereafter.
Each success adds to the difficulty of noticing or remembering the mage.
Note: that any blatantly attention-grabbing actions automatically violate the subtle occlusion of the spell. The spell affects anyone who witnesses the mage. It does not need special Target factors to affect more than one person. Those who possess some form of supernatural mental protection (such as a Mental Shield below) are subject to a reflexive contested Gnosis + Mind roll upon first encountering the caster. If the roll’s successes equal or exceed the Incognito Presence spell’s successes, the onlooker can remember the mage normally.
Guardians of the Veil Rote: Forever Stranger
A Guardian employing this rote is a stranger everywhere she goes, unnoticed by all if she does nothing to draw attention to herself. Others go about their business, unconcerned at her passing.
Guardians of the Veil Rote: Mask of Mediocrity[1]
With the Mudra of salheya ("unimpressiveness"), the mage using this rote may sneak about unnoticed carefully placing himself where those who see him regard him as simply another part of the faceless crowd through which the mage stalks.
Ancient Lands Pentalogy Rote: The Ancient Mask [2]
Used by the Minotaur and his men to move unseen through the streets as they hunt for signs of the newly-made magician, this is a tremendously old Guardians rote that relies upon physical stealth to overshadow the minds of viewers.