Plus, it's a huge boon in Commander because no longer do you have player elimination
Tokens and go-wide creature strategies are among the most effective in the Naya colors: Whether its hosting as your aggro commander or a fashionably-late guest, Jetmir is guaranteed to be the life of the party
That might seem redundant, but that also protects it from wither and infect sources of damage, as well as thing the trigger on combat damage to the creature so there is even more going on than at first blush
It included 65 legendary creatures, all of which were canonically living or spiritually present in Magic's lore
Drawing an average four to six cards for five mana is a backbreaker in limited, and having this in the common slot to boot didn't hurt matters much
Simply put, if you spend the time before the event planning out how you will sideboard, then during the tournament itself you won't have to spend that time thinking too hard in-between games