You must have the ONE notes by D+M
I had this idea, since some of the effects in the notes deal with a gambling base. The effect would be a mix of Heritage and Complete. Basically, you perform Heritage, but with three cards (being the flop). Then, do Complete with two cards, saying that the spectator dealed a very good flop, although the hand matters more. When the Spectator is done dealing, take the cards and go for the reveal, leaving a Straight Flush or Royal Flush, depending on your preferences.
Pros
1. The spectator controls every aspect of the effect.
2. Combines two of the greatest gambling effects by D+M
Cons
1. A lot of setup.
2. Preferred for a 1-on-1 performance.