Then, that Digimon may attack your opponent's Digimon
While Anzu in the manga could have quite a temper, it was never so frequent
every Commander precon
Its completely understandable to say to deck with it, and find something already built online, a practice called netdecking. Lots of Magic websites that catalog or archive decks show you the decklist and also provide a copiable list so that you can import the deck to MTG Arena or MTGO
That being said, more than a few decks in recent years have also proven themselves to be more than filler, acting as decks that can not only hold their own in competitive play, but can even win major tournaments with only a few changes and additions from whats included in the box
This puts players in a no-win situation where if you chump the creature wearing Umezawa's Jitte, your creature dies and your opponent get Jitte counters, and if you don't chump, they get counters and kill your creature anyway