Most played cards in Naya:

3 Decks
Servant of the Conduit
12 copies - 4 average
Harnessed Lightning
12 copies - 4 average
Aether Hub
11 copies - 3.67 average
Attune with Aether
11 copies - 3.67 average
Tireless Tracker
10 copies - 3.33 average
Game Trail
9 copies - 3 average
Oath of Nissa
8 copies - 2.67 average
Glorybringer
7 copies - 2.33 average
Channeler Initiate
7 copies - 2.33 average
Gideon, Ally of Zendikar
6 copies - 2 average
Bristling Hydra
5 copies - 1.67 average
Fumigate
5 copies - 1.67 average
Chandra, Torch of Defiance
5 copies - 1.67 average
Needle Spires
5 copies - 1.67 average
Fortified Village
5 copies - 1.67 average
Archangel Avacyn
5 copies - 1.67 average
Oath of Chandra
4 copies - 1.33 average
Magma Spray
4 copies - 1.33 average
Sylvan Advocate
4 copies - 1.33 average
Nahiri, the Harbinger
4 copies - 1.33 average