Asking for Opinions

What power do you think would suit Kouske as he develops his draconic powers? Like Ddraig's Domination and Albion's Principle of Supremacy...

1. I was actually thinking of Death as I would make him kill many Gods, and eventually dethrone Hades as Akatsuki. (Takatou Yogiri style Death.)

2. Adaptation. But I lean more towards Death as what good can Adaptation do when he's Immortal?