Don't I need a roll to determine whether I recognize/remember it?
Mage: The Awakening said:Identity: (1 success) Each resonance or aura is as unique as a fingerprint. If a mage has seen or studied a resonance before and is familiar with it, one success allows him to recognize the subject. He can recognize the resonance of the subject regardless of any sort of physical disguise or transformation, allowing him to detect people in disguise or under the effects of a transformative spell. With five successes, he can recognize shapeshifters in any of their forms. There are some means of disguising a subject’s resonance (see below).
Hm... It appears as though I can see this one.
So how do you want us to revise the dialogue in game. Could we just write it off as a random fluke, or should I go back and fix Prometheus' words to reflect what actually happened. For now, I'll simply keep going as if he never saw the succubus, but if I should edit the old post, let me know.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.