When this creature dies, shuffle it into its owner's library, then scry 2
Put these two things together, and the most obvious answers are Uro, Titan of Natures Wrath and Kroxa, Titan of Deaths Hunger from Theros Beyond Death
The rest of the deck is cheap removal and card draw that trigger all of our Wizards, so once we build up a big board of black mage Wizard tokens, we should be able to sling enough spells to kill our opponent pretty quickly, while cards like Burst Lightning and Go for the Throat help keep our opponent's creatures off the battlefield
You draw good cards at the wrong time
In addition to those six cards, we've also got a first look at two "Source Material" cards, which can be found in main set booster packs but are only legal in formats where they were already available
Formats like Commander and Pauper started out as fan variants that eventually built up enough steam to get official recognition