This always makes games more interesting and allows for a wider variety of approaches to deckbuilding
Some have sold for tens of thousands of dollars, for example
In the battle between Absorb and other three-mana counters Absorb would almost always win out if it was easily castable, and it was even a small incentive to choose white over black as a secondary color
In addition, Puppeteer CliquePuppeteer Clique (41,162 decks) works with Celes like the Redcap, but it doesn't outright win you the game
The entire set as one sells for over $10,000, and it is only rising, but this Maleficent card is the most expensive of them all because it is a powerful card that has since become iconic in many Ruby-themed decks, not to mention the artwork is fantastic