It can definitely get pretty big, but 5 mana is overcosted
Check out our other Lorcana articles, such as our look at the most valuable Lorcana cards, as well as our guide to Disney Cruise Lorcana cards
However, the parts that werent reprinted will start rising due to the demand of the other cards and probably make it a wash in the end for those players who pick up singles more slowly than others
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
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
If youre looking at other brands, just follow the sizes mentioned above (standard: 66x91mm or perfect fit: 64x89mm) and you should be good