This is because, despite many faults in the implementation in Standard, the Universes Beyond Commander decks are typically themed to perfection and draw on the source material to identify strong mechanical comparisons within Magic that make the game easier to understand
What makes this deck extra strong is the utility provided with lands like Dakmor Salvage with the dredge ability, a Drownyard Temple that you can sacrifice over and over again, Field of the Dead that starts producing 2/2 zombie tokens in the late game and Glacial Chasm
You need to fill out a similar form on the website by inputting the name, HP, and attributes, and upload your own images as the main image for the card
Much like the Adventure cards we have come to love from Throne of Eldraine, these cards are quite versatile, giving you an option of how to utilize and sequence your spells
It turns any Assassin dealing combat damage to a player into a card draw
Considering Steel Leaf Champion is legal in all the same formats, it's hard not to argue you should be playing it instead, considering you don't have to jump through any hoops, and it can't simply be chump-blocked by small creatures