Even commodities with clear levels of use-value demand like gasoline, eggs, or palladium fluctuate in price for similar reasons, a combination of demand, investment speculation, and, if not always nostalgia, at least some form of emotional connection to a product that seems stronger than its value in use or consumption
Some of the Magic panels at that event will be live-streamed or recorded, but there's no word on whether this FIN announcement will be one of those, or if it'll be a small mention during the middle of another panel
Sacrifice a few Rat tokens to Skullclamp or Village Rites for a few cards, and then trigger some damage and life gain with Zulaport Cutthroat or Blood Artist
The special Energy cards and the Trainer cards included in the expansion also helped enrich the gameplay
They were neutered due to a fear of how powerful their mechanic might be