According to the developers on-stage, they were designed to feel like the " ultimate prize ": according to the team, they look and feel like real gold
Emrakul, the Promised End needs lots of card typesnot just in your deck, but your graveyard, too
Commander Legends: Battle for Baldur's Gate Gave a lot of new usable toys in Commander for everyone to absolutely enjoy, even if you aren't familar with the franchise in the first place
This is a reason for it to block almost everything, as it can return to the battlefield next turn without summoning sickness or extra mana spent
If Alisaie Leveilleur and Alphinaud Leveilleur are your commanders, your deck may contain cards with white and/or blue in their color identity, but not black, red, or green