Companies like BGS (Beckett Grading Services), PSA (Professional Sports Authenticator), and CGC (Certified Guaranty Company) are the big names in this space
The difficulty becomes the balance of drafting your main deck and your sideboard
Serum Visions would be more than good enough for the format without breaking it, and it may give fringe decks like U/W Control some much-needed consistency
Things get really fun when you add ways to blink Omnath (Deadeye Navigator), which not only draws you another card but resets its landfall count so you can gain more life, make more mana, and dish out more damage
Reanimation is also a good plan for mill decks, and cards like Virtue of Persistence or The Soul Stone should find their way into mill decks, if only to disrupt reanimation targets or use powerful milled pieces for your own gain
If you can exile the creature as your opponent tries to enchant it with Twin, you can net a tasty two-for-one