A great addition to the deck would be Karn, Scion of Uzra, Underhanded Designs, and Phyresis. If you have an increased budget I would reccomend Urza's Saga a lot. Another non-budget reccomendation which ends games is Vorinclex, Montrous Raider and/or Doubling Season which can make The Most Dangerous Gamer lethal very fast and when combined with Karn, Living Legacy can turn all of your attractions into pingers.
That may be a strange question, but when building the attraction deck, do you think it's better to have about equal numbers on each light 2-5, or trying to get a lot of them on the same number?