Most played cards in G/R Ramp:

4 Decks
Nissa's Pilgrimage
15 copies - 3.75 average
Kozilek's Return
13 copies - 3.25 average
Shrine of the Forsaken Gods
12 copies - 3 average
Traverse the Ulvenwald
12 copies - 3 average
Evolving Wilds
11 copies - 2.75 average
Fiery Impulse
11 copies - 2.75 average
World Breaker
11 copies - 2.75 average
Dragonlord Atarka
9 copies - 2.25 average
Game Trail
9 copies - 2.25 average
Cinder Glade
9 copies - 2.25 average
Emrakul, the Promised End
8 copies - 2 average
Sylvan Advocate
8 copies - 2 average
Tireless Tracker
8 copies - 2 average
Hedron Archive
8 copies - 2 average
Chandra, Flamecaller
8 copies - 2 average
Tormenting Voice
7 copies - 1.75 average
Hangarback Walker
7 copies - 1.75 average
Sanctum of Ugin
6 copies - 1.5 average
Rending Volley
6 copies - 1.5 average
Ishkanah, Grafwidow
5 copies - 1.25 average