The guaranteed foil card, for example, can be of any rarity with either a borderless or ichor showcase treatment
As part of the meet and greet with the devs, you will get to play a 15-minute game of Pack Rush with either Tomo or Levi
When considering upgrades for this deck, Grand Arbiter Augustine IV is worth a look-in owing to how it reduces the cost of your blue and white spells, and (rather cruelly) taxes your opponents for every spell they cast
Best Cost Reducer Payoffs While any deck can leverage the virtual mana generation of cost reducers, they tend to be best in combo-ish decks interested in firing off tons of spells
And then there are cards like Aerith Gainsborough that do a little of both
You'll be impressed with the amount of niche cards that are available here, which may be exactly what you were looking for your specific build in EDH