Play every Skyrim Character with the intent purpose of giving Lucien multiple heart attacks in a row.
"Oh dear, what a... quaint place this ratway, really a riot, let's hope this farmer's bow, wait, LDB? LDB why are you following the scary ghost? LDB why are you trying to break down the barrier protecting us from the cursed sword? LDB WHY ARE YOU GETTING THE SWORD EVERY SINGLE NOTE IN THIS TOMB HAS DEFINED AS DANGEROUS AND SOUL SUCKING???"
Then you leave Dawnfang's containment chamber and he thinks you can't do anything crazier until you beeline for Ravencroft Manor and witnesses you joining a definetly illegal underground murder arena.
"LDB, why, in the name of the divines, did you join a fight club?"