Uxie, Mespirit, and Azelf can be found specific locations in the overworld after visiting the Cave of Being
The Burn The rest of the deck is every card I could find that burns based on mana value
Once something's been Plowed, it's gone for good -- until the next game
Card not found, on the other hand, was a stable in some of the most powerful decks of the time in Standard, meaning that it was miserable enough to be banned a year after its initial printing, which isnt even that notable, because there were so many bans around this time, because WotC had completely lost their grasp on Standard, which we are still feeling today
Im 100% sure well get even more Treasure token shenanigans in AFR, but gold and jewels are really just a consolation prize for experienced D&D characters