First of all, discarding cards is not always necessarily bad, depending on what you discard, of course
Its pretty much as cool as it sounds, and thats before I mention that each of the two guns you choose for your loadout gets its own deck you can draw from and cards you have to load into your gun before firing
White has gotten more blink support in recent years, with Ephemerate finding its way into more and more decks as a value play
Number 241 Language English Legal Formats Commander, Legacy, Vintage Not Legal Formats Alchemy, Brawl, Competitive Brawl, Historic, Pauper, Pioneer, Standard, Timeless Rulings (12/1/2004) Mycosynth Lattice turns all permanents on the battlefield into artifacts
As a quick related aside, theres a common anti-Reserved List argument that most of these cards will hold their value even though a reprint because even if they print more Underground Seas, they arent going to print any more Beta Underground Seas