Even pulling them from packs in gem mint condition can prove very difficult
I've built dozens of different decks in my Magic career
Like most Magic: The Gathering cards, the value of Feed the Machine depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Archenemy Schemes)
The magical Christmas-land scenario where you get a turn 3 win(ota) looks like this: Turn 1: Play a land, cast Sol Ring, drop two cheap creatures like Rograkh, Son of Rohgahh, Ornithopter, or Ornithopter of Paradise
More than once during the first wave, I got under an hour only to be kicked back to a three-hour wait
The Prismatic Bridge has you reveal cards from the top of your deck until you find a creature or planeswalker, putting that card onto the battlefield under your control