I’m a big fan of the rule of three: if you list things in groups of three, they are easier to remember, they are more powerful, and they engage more with your audience.
However, there are good reasons to break the rule of three from times to times.
According to Miyamoto Musashi, the author of “Go Rin No Sho”, the book of the five rings:
It is bad to repeat the same thing several times when fighting the enemy. There may be no help but to do something twice, but do not try it a third time.
Here the very example of that principle, in a recent UFC fight.