The art gets more stylized, and deck diversity really opens up
Even if you only get a few cards off him, he's a pretty good draw engine in a Jund shell, and even as a commander he can definitely do a lot of work - he restricts what you reasonably might want to use your removal on, but turning all your removal into cantrips is quite a scary thing when he also provides a reasonable win condition on his own
It's all very powerful stuff
I have picked 5 cards from 6 different Wizards of the Coast sets and analysed the prices realised between September 2017 and December 2017 below to look into this further
This, combined with the expansion of the card pool since the card's release, has made this card more powerful than any other Leader
Whether this was a genuine mistake or a next-level marketing move is unclear, and will likely remain so