If card sizes varied, protecting your beloved cards would be a minefield, as you'd need a whole array of different-sized folders, card sleeves, and deck boxes to accommodate them all
1 Urza, Lord High Artificer Works Well With Any Artifact Build 9,488 Decks on EDHrec.com Urza, Lord High Artificer is the most popular mono-blue commander, and Commander players should be aware that playing such a deck will often make them a huge target, especially in more casual groups
Even if the main focus is the alternative artworks and reprints, there are a bunch of very decent cards that I am sure will be played and can spice things up for the remainder of the format
Creature - Kraken Kederekt Leviathan When this creature enters, return all other nonland permanents to their owners' hands