Through a certain set of circumstances you develop an ability called Mark of the Head God, which allows you to basically create gods or bestow god-like abilities to mortals, but there is a small gimmick with the ability. You can't bestow powers to yourself, sort of.
You can't directly give yourself powers but whenever you create a god you gain any powers the god has. For example if I created a god with Absolute Law Manipulation and Absolute Mind I would also gain Absolute Law Manipulation and Absolute Mind.
You also can't create beings with Ultipotence, Metapotence or Omnipotence. Just to balance you out a bit.