Most played cards in RGW Aggro:

2 Decks
Red Elemental Blast
8 copies - 4 average
Savannah Lions
8 copies - 4 average
Plateau
8 copies - 4 average
Taiga
8 copies - 4 average
Lightning Bolt
8 copies - 4 average
Swords to Plowshares
7 copies - 3.5 average
Disenchant
6 copies - 3 average
Birds of Paradise
5 copies - 2.5 average
Circle of Protection: Red
4 copies - 2 average
Fellwar Stone
4 copies - 2 average
Chain Lightning
4 copies - 2 average
Kird Ape
4 copies - 2 average
Icy Manipulator
4 copies - 2 average
Savannah
4 copies - 2 average
Scryb Sprites
4 copies - 2 average
Llanowar Elves
4 copies - 2 average
Ice Storm
4 copies - 2 average
Argothian Pixies
3 copies - 1.5 average
Whirling Dervish
3 copies - 1.5 average
Erhnam Djinn
3 copies - 1.5 average