Most played cards in G/W Aggro:

5 Decks
Windswept Heath
18 copies - 3.6 average
Troll Ascetic
16 copies - 3.2 average
Knight of the Reliquary
15 copies - 3 average
Kitchen Finks
15 copies - 3 average
Umezawa's Jitte
14 copies - 2.8 average
Temple Garden
14 copies - 2.8 average
Wooded Foothills
14 copies - 2.8 average
Treetop Village
12 copies - 2.4 average
Llanowar Elves
12 copies - 2.4 average
Noble Hierarch
12 copies - 2.4 average
Tarmogoyf
11 copies - 2.2 average
Chrome Mox
10 copies - 2 average
Worship
9 copies - 1.8 average
Chalice of the Void
8 copies - 1.6 average
Wilt-Leaf Liege
8 copies - 1.6 average
Vinelasher Kudzu
8 copies - 1.6 average
8 copies - 1.6 average
Path to Exile
8 copies - 1.6 average
Gaddock Teeg
8 copies - 1.6 average
Oblivion Ring
7 copies - 1.4 average