This is one of those things that really ticks you off when they don't know
about it. One of my friends says that he can put down a double colorless and
*ALSO* a basic energy. He says because it is not a basic energy, then it can
be laid down and also a basic energy. I know this is wrong, but have to prove
it for him to believe me. So, please send the correct answer.
                Worudu

The rules of the game state you may play one energy card per turn, not one basic energy.  It does not matter what kind of energy it is.

Scott