Is this still open and available? If so can I make a goddess parented by Nyx and Chaos?

Also is there a character limit? I didn't see one so I thought I should ask. 

As well are there thing that I am NOT allowed to do? Such as create an entirely new goddess or have a similar power to someone else? 

What if there's a child of The greek Goddess of war adn Thanatos? Would they not enjoy fighting? If both parties consent to it then are we allowed to spar?

Sorry for having so many questions.