For Mirror Box, that rule is the legendary rule that says you're only allowed one copy of a legendary creature card on your battlefield at the same time
Tinybones, Bauble Burglar can both support and lead your black discard decks, and its a cheap creature that represents a fan-favorite character
Its descriptive text states that it can blast out sand " with enough force to wash away a dump truck ." This card is a reprint of the Uncommon card 120/198 of the Scarlet and Violet
Unfortunately, as Sottosanti notes, momentum continued to drift away from purple during the design process, and it was ultimately left on the cutting room floor
Vision Skeins Vision Skeins is kind of low impact, but its the only card that does this, so make sure you know it exists
This strategically works around the item lock caused by Budew, and it can allow for some intriguing plays if it remains on the board for more than one turn, which makes it one of the best stadiums in the game