EarthquakeEarthquake (40,189 Inclusions, 2% of 2,337,008 Decks) The original red boardwipe, EarthquakeEarthquake still holds up these days precisely because of commanders like Niv-Mizzet, VisionaryNiv-Mizzet, Visionary that want to be able to damage players
Partner with local businesses and give them a small percentage of the income or negotiate the fact that these machines will bring people into their business because the cards are in such a high demand
A brief refresher, as even experienced players tend to have issues with Protection: "Protection from X" means "this card can't be damaged, enchanted, blocked, or targeted by anything that is X." This means a Silver Knight can eternally block a Goblin Goon and can't be hit by Lightning Helix
You will often be going wide and trying to grind out value/damage with evasive ringbearers
Pick CGC if you want a great mix of value, clear slabs, and fast turnaround, especially here in the UK and EU