If youre looking at other brands, just follow the sizes mentioned above (standard: 66x91mm or perfect fit: 64x89mm) and you should be good
While the Explorer doesn't let you play lands from the top, it does let you play them from the graveyard, all while milling you for each land played, so as to get more lands into the graveyard
It can definitely get pretty big, but 5 mana is overcosted
Deaths Shadow is currently the only deck playing Dress Down in the starting 60, but with so many beneficial interactions in the format, some other decks have already started playing the card in the sideboard as well, and I expect the card to continue seeing play
This wont work for Casa Madrigal Casita, Institute of Technology Prestigious University, or Flotilla Coconut Armada and others because their if conditions must be met at the start of the turn, and when resolving them