Pairing it with effects like Fanatical Offering keeps the sacrifice chain flowing
However, if you have some first edition cards, especially those with printing errors, they could be valuable collectibles.
The tournament rules also define an "Authorized Game Card" as the following: "Authorized Game Cards are cards that, unaltered, meet the following conditions: The card is genuine and published by Wizards of the Coast
Prices reached astronomical peaks during that frenzy, driven by speculation and FOMO as much as genuine collecting demand
While they can be used for mana in the early game, they later become deadly threats
For all we know, trading will be designed as a casual social feature and all but useless to competitive players and completionist collectors