You can open an account with moneypot, deposit ur btc into it. There is an investment tab where you can choose to invest and when you think u want to take out the money, just click on divest. The profit is depend on the casinos. If the players lose, your investment will go up, if the players win, your investment will go down. There is no promise it will be profit but the house edge should make the moneypot to be profit in the long run.