Historical Rules · 14 April 2023
Rule 100.7
Official source text from the 14 April 2023 Rules release
Certain cards are intended for casual play and may have features and text that aren’t covered by these rules. These include Mystery Booster playtest cards, promotional cards and cards in “Un-sets” that were printed with a silver border, and cards in the Unfinity™ expansion that have an acorn symbol at the bottom of the card.