Visage of the Demon Prince is the Orcus-unique Death Domain avatar summon, and it's....Kinda bad.
Visage uses unarmed attacks, but doesn't have Improved Unarmed Strike, which means every attack provokes an Attack of Opportunity. This leads to Visage not lasting in a fight for more than a handful of rounds.
I suggest either giving it Improved Unarmed Strike, or changing its attack to a creature weapon.
I think in efu, death domain summons have always been intended to just look cool for roleplay purposes rather than be effective in combat. Damn shame imo :(