When playing Omaha, you would simply be holding an ace high hand, since both cards must be used. If all hearts are showing on the board, and you are holding an ace of hearts and a king of diamonds, you would have a flush in Texas Hold'em.
You must use 2 of your hole cards when forming your best possible hand. You can use four cards from the community cards and one from your hand, or two from your hand combined with three from the community board. In Texas Hold'em, you may use any combination of your two hole cards, or leave one of them out altogether.The second noticeable difference from Texas Hold'em is the fact that the players must choose two of their four cards and are required to use both of them in order to make the best hand possible.Each player is dealt four cards face down, as opposed to the two cards that are dealt in Texas Hold'em.
