The mage can project emotions. These feelings are more a suggestion than a mandate, though they are apt to be heeded if they make sense for the individual and situation. (Causing someone to feel sad when walking into a decrepit old house is reasonable and likely to be dismissed as a natural reaction, whereas making someone feel sadistic glee at the funeral of a sibling almost certainly causes the subject to question from whence that emotion came).
If the target is a mage with at least Mind ● he might have an inkling via his Unseen Senses[1] that he is manipulated. A reflexive Wits + Composure roll is made to sense the manipulation of his emotions. He can know nothing further unless he casts magic (such as Third Eye) to learn more. Most mages react by first erecting a Mental Shield.
Mysterium Rote: Sculpt the Heart
Blatant displays of power are not always necessary or even prudent.
Mages of the Mysterium can often get by with nothing more than a subtle
emotional suggestion.
Guardians of the Veil Rote: A Push in the Right Direction
Guardians of the Veil also use such magics to carefully nudge the unknowing away from secrets they are not yet ready to glimpse.
Theosophy Tradition Rote: The Presence of the Teacher[2]
During the Russian Civil War, Gurdjieff and his commune fell foul of the Bolsheviks while trying to escape Russia. In danger of being shot where he stood, the Master managed to not only convince the Reds that he and his friends were a legitimate archaeological expedition, but talked them into giving him money for shovels and picks. His possibly supernatural powers of persuasion got him safe passage letters from both White and Red armies, written on the two sides of a single sheet of paper. Such was his hypnotic power.
