can i cast Commune with the Gods with less than 5 cards in my library?

[Ligom]

can i cast Commune with the Gods with less than five cards in my library?

[Twanos]

Yes. For example if you have 4 cards you will reveal all of them and then do the rest of what the card says. This will result in 0 cards left in your library. You will not lose the game for having 0 cards unless you are forced to draw from the empty library.

Remember revealing is not the same as drawing.