Some of the mechanics involved such as Descend will test your deck-building skills in new and unique ways
Earthcraft is the best source of mana to fuel a number of infinite combos involving Doubling Season, Cathars Crusade, The Meathook Massacre, and Corpse Knight, among others, but these cards only scratch the surface of your combo potential with this commander, so if thats your preferred style of play, the linked primer above is going to be your best starting point for deck construction
The fact that The Abyss cant hurt them is pretty great as well, thats a card you should always watch out for
Inquisitor Eisenhorn investigates, fittingly, and it makes a demon token
The main things that it adds are the ability to play a solo mode and a well-developed system for playing a co-op version of the game against an automated villain
Does every order really come with a free magnetic case