Tying into the world of MTG, Duskmourn also released unique overlord and Glimmer creatures which have dominated the set's popularity
1 Leyline of Combustion
Then there are cards like Aya of Alexandria, Kassandra, Eagle Bearer, Edward Kenway and Adwal, Breaker of Chains
Players who are at all interested in Standard tend to group Standard-legal cards together, with a separate box for the cards that have rotated out of Standard
Xanathar, Guild Kingpin Oh boy, whats not to love about this Dimir 5/6 Beholder
Sure, we could add in the fourth copy of Thalia, Guardian of Thraben or some semi-helpful rare lands, but I'm not sure any of these upgrades would be very meaningful