Elesh Norn, Grand Cenobite is also a pretty expensive card to acquire, which speaks to her popularity in general though that of course is likely to mean that shes proven popular in other formats of MTG, not just Commander
Both sides have vigilance, and Doric, Owlbear Avenger / Casal, Pathbreaker Owlbear only transforms on your upkeep, so it hangs back as a formidable blocker, too
The shaman is on the slow side with a toughness of three, leaving it susceptible to removal while reducing its chances of attacking multiple times
Champion of the Perished plays a similar role as Knight of the Ebon Legion, cards like Cryptbreaker create value, and we have a powerful planeswalker for removal, card advantage, or incremental value