What if I command succubus not to refuse the binding? It would be same as recasting dominate person against target who is already under dominate person.<br/><br/>Anyways checked fiendbinder, loss of 3 levels over 10 levels not attractive and even if I bind succubus I need spend standard actions to command it to attack every turn (and constantly roll true speech checks to make fiend do anything).<br/><br/>Also again; I have CL 10 with<em>all</em>conjuration spells! So it's every 10 days. It's part of my class feature as master specialist. Normal arcane CL is 9 but I have CL 10 with conjuration.