Alright, thanks. I don't force myself to strictly adhere to that limit, sometimes I have four OU Pokemon or two OU Pokemon. I just enjoy experimenting with sets that Smogon doesn't suggest and I've found some Pokemon that I think would work and test against more OU Pokemon to see if they are actually viable.Various Pokémon which are not OU by usage are viable in the OU metagame. A good resource to use if you're stuck is the ORAS OU Viability Rankings which is regularly updated and it is good to use while you are still learning the meta. That said, having a strict team structure of "3 OU+3 non-OU" is very limiting, and typically most good teams will consist of mostly OU Pokémon. Usage=/=viability, but in most cases (not all) there is a good reason why something is in the tier that it is.