@Maultasche
@feddit.deI was thinking of the Daedric quest for Sanguine which has nothing to do with the Brotherhood. Sanguine sends you to a party and wants you to use a spell without telling you what to do.
::: spoiler Tap for spoiler The spell removes the clothes of everyone in the room including you and you have to flee the place naked to get your gear back. :::
Ah ok. Because of the dress rules in the title, I thought it was about that one countess's party you have to crash.
Is that the quest, where a Deadric Prince gives you a spell without telling you what it does?