blue dragon cards mtg MTGNexus Revised Blue Eyes Endless Dragon

Playing Xorn on curve is a mistake unless you are creating treasure tokens by attacking with a creature like Hoard Robber, or are casting an Instant that turn which produces a Treasure token

Atlas is a decent card, if a little narrow, but this is the perfect place for it

You pay one blue mana, then any amount of additional mana, and allow everyone else at the table to chip in

From hard stax pieces like Elesh Norn, Mother of Machines, Drannith Magistrate, and Archon of Emeria to softer disruption in Thalia, Guardian of Thraben or Ranger-Captain of Eos, white disrupts and stops your opponents better than any color except maybe blue and its countermagic

Feywild Trickster gives you a 1/1 flying token, which is a solid enough payoff