Im very glad it never made a big competitive splash
Although its classified as Universes Beyond, its also Standard-legal except the Commander decks, of course
That opponent reveals the top X cards of his or her library, where X is the number of Tithe counters on The Royal Treasury
Some of the initial cards that were printed as Quarter Century Secret Rares were as follows: Rite of Aramesir Welcome Labynth Divine Arsenal AA-ZEUS- Sky Thunder Pot Of Greed Ash Blossom and Joyous Spring Dark Magician Blue-Eyes White Dragon Red-Eyes Black Dragon The Winged Dragon of Ra Slifer the Sky Dragon Obelisk the Tormentor Generally, these are all cards that either have an important place in the Yu-Gi-Oh anime or in the Yu-Gi-Oh card game itself, but this isnt all of the cards that will be available in the new rarity, as the list has expanded significantly since the first sets were released!
Very playable and will grind out most games for you if he lives long enough, the feel of having him about in a relatively even game is that of drawing an extra card every turn, you just wind up ahead after a while
Here is the definitive checklist: Rarity Card Types & Print Finishes: A TCG Manufacturer's Breakdown Based on real prototype images from the London Trading Card Show, we can identify the specific print finishes used to differentiate the sets
