More likely is the scenario where they compared the continued thriving market for rare and expensive TCG singles against GameStops cratering stock price following a weird short squeeze ploy from amateur internet investors artificially surged its price for a brief, entertaining moment in 2021
The fastest way is to look at the expansion symbol on the right side of the type line
Although most black decks are looking to wipe the board rather than hold it at bay, this is still somewhat unique in the color, although I bet it would see play in Zur the Enchanter on occasion if it cost three
Example Basic Land Mountain means the card is a land with the subtype Mountain
Currently, TCGPlayer has this Supporter card listed with a price of $63.99, although the market value has not yet been established
Though it doesn't quite reach the same crazy numbers that one does, it's still an expensive card to pick up