Draw and Mill strategies love this card, Niv-Mizzet, the Firemind and Laboratory Maniac especially
Many ideas and mechanics that used to be silver-border are now printed in black-bordered sets, sometimes 1-for-1 When people approach me about silver-bordered cards in Commander, the most common topics are (in no particular order) Host/Augment (and Surgeon General Commander), Acornelia, Krarks Other Thumb (and other coin flipping/dice rolling cards from Unglued), and Contraptions
Every booster contains 6 alt-border cards, a total of 1012 shining Traditional Foil cards, and may even contain a card with a special Collector Booster-exclusive foil treatment
The item is in beautiful condition
Some cards will randomly mention this strange mechanic and require interacting with it to make them reach their full strength, and it's actually a lot more straightforward than you would first think