Most played cards in Aetherworks:

2 Decks
Harnessed Lightning
8 copies - 4 average
Attune with Aether
8 copies - 4 average
Woodweaver's Puzzleknot
8 copies - 4 average
Ugin, the Spirit Dragon
8 copies - 4 average
Aetherworks Marvel
8 copies - 4 average
Servant of the Conduit
8 copies - 4 average
Vessel of Nascency
8 copies - 4 average
Aether Hub
8 copies - 4 average
Wooded Foothills
8 copies - 4 average
Kozilek's Return
7 copies - 3.5 average
Ishkanah, Grafwidow
6 copies - 3 average
Dispel
5 copies - 2.5 average
Emrakul, the Promised End
5 copies - 2.5 average
Negate
5 copies - 2.5 average
Whirler Virtuoso
4 copies - 2 average
Cinder Glade
4 copies - 2 average
Yavimaya Coast
3 copies - 1.5 average
Botanical Sanctum
3 copies - 1.5 average
Fiery Impulse
3 copies - 1.5 average
Natural State
3 copies - 1.5 average