Put three 2/2 green hound creature tokens onto the battlefield. If you control the most creatures, hounds you control gain haste until end of turn.
Jackpot (As an additional cost to cast Real-Estate Deal you may reveal two cards with converted mana cost 6 from your hand. If you do, copy it twice.)
See Challenge # 135.
Oh, I like Jackpot. I'm not sure it matches the plane well enough to be a mechanic, but it's a cool idea none the less.