>It seems to me that Oriphos may be in for an interesting experience.
>After all, it isn't part of Muspelheim so invading Oriphos doesn't
>invalidate all those nuisancy treaties that kept Corwin from gutting
>Akio when he visited Sheol.

I do believe that once he gets his feet under him, no treaty could stop Corwin from converting Oriphos back to the less-than-dust from whence it came. You're forgetting who Corwin's aunt is - defying the Allfather is kinda in his blood :)