Iconic Masters is an example of this, where cards like Auriok Champion and Ancestral Vision were only expensive due to scarcity, and the impact on the price of Horizon Canopy and Aether Vial was borderline statistical noise
You can't use more than 720x Poke Gold per day (120 packs, or $150)
At the center of the toolbox, you'll be able to roll these metal orbs down a small chuteif the orb lands in a white-bordered hole, it's treated as heads, and if it lands in a black-bordered hole, it's treated as tails
Walmart and TCGplayer listings are even cheaper, but this Amazon Chaos Rising Booster Box price is sporting a 19% discount
I have seen many players bring in things like Xantid Swarm or Disfigure against decks like RUG Delver, but this is not good sideboarding