omaha?

Read this:

Two cards, always two cards... Omaha hands consist of three of the five community board cards, plus two cards from each player's hand -- always three off the board, always two out of the hand. You can use the same or different card combinations to make your high hand and your low hand (if any), but you always use two from your hand, three from the board. This is important not just from the perspective that it is a rule and you have to do it, but also in thinking about how your hand must integrate with the board. Your hand must cooperate with the board. (Cooperation is a recurrent Omaha principle.) You should never think of your hand in isolation. It needs three cards from the board for high, and needs three cards for low. (Some new players find it helpful to focus more on "three from the board" rather than "two from the hand.")

(Thanks to Playwiningpoker.com)