The One Rule

The One Rule was the guideline put forth by The First God at the dawn of The Multiverse.

Though different cultures have had varied interpretations of its meaning, it could most easily be summarized as; "All shall have claim to power." This means a few things:

The main one is that none can be omnipotent, omnipresent or omniscient.

The second one is simply a promise that you can always get stronger no matter who you are.

And the third is that all can shape their own future as it is never set in stone.

The One Rule usually manifests through the Rules of Time and how The Gods function. Not even The God of Time can perfectly predict the future, and Gods in general can simply be considered very powerful mortals.