yugioh arcana deck KEY YuGiOh » Arcana Force 0

source: eBay Several Chaos Emeralds have already made it to to eBay, and the cheapest is currently sitting at about $600

but I don't think you have to play zero

Being one of the starter evolutions, this is likely a card that many players had on hand at one point or another and may not have realized the value it would one day hold

However, these Special Guests cards are playable in Limited, so you can play any cards if you open them in packs while drafting or at a Prerelease

Medicham F - Aiki Blow 50+ If this Pokmon and your opponent's Active Pokmon have the same number of Energy attached, this attack does 120 more damage

That allows players to turn anything into an instant