It helps with storing and displaying cards A standard size also allows consistency when displaying and protecting your cards
The art alone captures the feel of the location, but the ability to banish any character that challenges and banishes another character makes it even better
More smaller mechanics also help fill out the set
I did have an actual heated match against someone, and that was the most fun with MTG Arena since I got started
Commander decks of March of the Machine will see the return of Planechase a multiplayer supplement allowing players to hop from one plane to another, with the rules changing based on where your battle is currently taking place. Ongoing Threat a black/white deck that cares about Phyrexians
But its also a useful card in legends decks, enchantress decks, and whatevers going on in Kathril, Aspect Warper decks