I can’t create my own god any more than I can create my own language. If I posit the existence of a god, I can just as easily posit its non-existence, therefore the authority that I would want it to have would be undermined.
But what if I am only indirectly involved in the creation of this god? What if I introduce an element of chance in its creation? Certain characteristics of this deity are now no longer subject to my will alone, but attain a degree of independence. It is within my power to create an environment, or better, an apparatus, that could be utilized to determine the characteristics of this deity. But the outcome would be outside the scope of my will and, though I might reject it, I cannot deny its independence.
Revelation then, could be induced by a properly constructed apparatus that incorporates a relevant degree of chance into the process.