This is the compilance of rules any wretched hero must abide. The rules are set by the evil gods, but that doesn't mean you have to be evil to write a tenet. Now let's begin the corruption!
Some Atheist's tenet: You are important, that is why everyone wants to know about you. Thus, you shall please their craving by boasting about your tastes and opinions while attacking everyone else's. People will love that.