The deck has decent staple reprints, notably Academy Ruins, Panharmonicon, Conjurer's Closet, Arcane Denial, and Lightning Greaves
You can activate X's second ability to play one of the cards in that hand
To exploit this ability, the idea is to run only devastating threats like Hullbreaker Horror or Nezahal, Primal Tide and run commanders or cards that create tokens like Talrand, Sky Summoner that can later be used as fodder
As always, this is a special set of cards from throughout Magic history with special artwork themed around the plane of Duskmourn
Esper Fun: 2 Impact: 2 Chaos: 3 There are some cases where this plane will be bonkers for a player or two in a pod, and then others where it might as well be blank for the entire table