Most played cards in Esper Dragons:

1 Decks
Silumgar's Scorn
4 copies - 4 average
Dragonlord Ojutai
4 copies - 4 average
Spell Queller
4 copies - 4 average
Anguished Unmaking
3 copies - 3 average
Declaration in Stone
3 copies - 3 average
Take Inventory
3 copies - 3 average
Unsubstantiate
3 copies - 3 average
Foul-Tongue Invocation
3 copies - 3 average
Evolving Wilds
3 copies - 3 average
Languish
3 copies - 3 average
Prairie Stream
3 copies - 3 average
Jace, Vryn's Prodigy
3 copies - 3 average
Gideon, Ally of Zendikar
2 copies - 2 average
Virulent Plague
2 copies - 2 average
Dragonlord Silumgar
2 copies - 2 average
Thalia, Heretic Cathar
2 copies - 2 average
Kalitas, Traitor of Ghet
2 copies - 2 average
Summary Dismissal
2 copies - 2 average
Choked Estuary
2 copies - 2 average
Sorin, Grim Nemesis
2 copies - 2 average