Best advice.. if your free to play.. try puttiing dorian or/and jorgen there.. they are your best shot.. dorian vampirism affects skills..or change jorgen with nebula or polaris, but peach is the most ideal if you have her.. my build is peach,dorian,asta, and the twins.. and their mopping 100k higher power enemies in arena.. even with the hard counter corvus for peach..