Spell of Forgetfullness

[Brodnur]

I had an idea for a spell of forgetfullness. When cast successfully on a PC, it would cause the target to forget the PC's that have greeted them in the past, but only for a limited duration. Of course, higher skill levels would make for longer forgetting. There would have to be a good bit of RP involved, as they would always be able to see the adjective's of the PC's, but thats why we are all in this game to begin with, isn't it?