#To the best of my knowledge every existing story of Clavicus Vile dealing with the other Princes ends very badly for him.

[uesp]

"Yeah, rub it in. Just imagine what I could get done with my full power and none of these pesky 'morals.' Still, I've got this axe, and even if I can't use it, I'm sure someone would make a deal for it. Maybe I'll have a word with Molag Bal..."

--Cut dialogue from Clavicus Vile, after returning Barbas, where he tries to figure out how to pawn off the Rueful Axe