• Spoilers (a little....)*

I've just finished Skyrim Main Quest 2 days ago When i came across the Daedric Quest "Boethia's Calling" When i learned that i need a sacrificial friend to move on to the next phase of the quest.....

So who among your unfortunate Follower that you sacrifice to gain the Daedric Prince's attention?

I sacrifice Uthgerd the Unbroken for no particular reason, i tried one of those Dark Brotherhood Initiate but it seems they don't want to active the Sacrificial Pillar