In your view, is there a need in theistic satanism for something like a "nicene creed" for the individual (or group)?
I'm busy researchng one for myself to have a concise statement of faith, but what sayeth u?
There's no one "Creed" that would work for all theistic Satanists. Beliefs are way too varied among us. I also don't think it's desirable to try to establish an orthodoxy for all theistic Satanists, since that would contradict the freedom and independent thought which, at least in theory, are an important part of what Satan stands for in most forms of Satanism.
But I think it's okay for individual Satanist groups to have their own creeds, to establish a sense of common purpose for the particular group. I just don't think that any such creed should be applied to theistic Satanism as a whole, with the attitude that those who disagree aren't "true Satanists."
The New York City proto-congregation of the Church of Azazel now has a short ritual that is somewhat Creed-like, although not a Creed per se: Affirmation of our common purpose.