Most played cards in RUG Aggro:

5 Decks
Mishra's Factory
20 copies - 4 average
Psionic Blast
20 copies - 4 average
Lightning Bolt
20 copies - 4 average
Serendib Efreet
20 copies - 4 average
Scryb Sprites
20 copies - 4 average
Volcanic Island
19 copies - 3.8 average
Tropical Island
19 copies - 3.8 average
City of Brass
19 copies - 3.8 average
Argothian Pixies
19 copies - 3.8 average
Taiga
18 copies - 3.6 average
Chain Lightning
18 copies - 3.6 average
Black Vise
16 copies - 3.2 average
Kird Ape
16 copies - 3.2 average
Shatter
16 copies - 3.2 average
Counterspell
15 copies - 3 average
Blue Elemental Blast
14 copies - 2.8 average
Control Magic
11 copies - 2.2 average
Artifact Blast
8 copies - 1.6 average
Strip Mine
5 copies - 1 average
Chaos Orb
5 copies - 1 average