Most played cards in Aggro Combo:

2 Decks
Su-Chi
8 copies - 4 average
Volcanic Island
8 copies - 4 average
Triskelion
7 copies - 3.5 average
Animate Dead
7 copies - 3.5 average
Fireball
7 copies - 3.5 average
Red Elemental Blast
7 copies - 3.5 average
Rukh Egg
7 copies - 3.5 average
Badlands
7 copies - 3.5 average
Mana Vault
6 copies - 3 average
Underground Sea
5 copies - 2.5 average
City of Brass
5 copies - 2.5 average
Sacrifice
4 copies - 2 average
Diamond Valley
4 copies - 2 average
Blood Moon
4 copies - 2 average
The Abyss
3 copies - 1.5 average
Black Lotus
2 copies - 1 average
Library of Alexandria
2 copies - 1 average
Falling Star
2 copies - 1 average
Boomerang
2 copies - 1 average
Control Magic
2 copies - 1 average