Most played cards in UR Aggro:

1 Decks
Magma Spray
4 copies - 4 average
Negate
4 copies - 4 average
Aether Hub
4 copies - 4 average
Torrential Gearhulk
4 copies - 4 average
Hieroglyphic Illumination
4 copies - 4 average
Harnessed Lightning
4 copies - 4 average
Censor
4 copies - 4 average
Spirebluff Canal
4 copies - 4 average
Wandering Fumarole
4 copies - 4 average
Fevered Visions
3 copies - 3 average
Dispel
3 copies - 3 average
Pull from Tomorrow
3 copies - 3 average
Thing in the Ice
3 copies - 3 average
Disallow
3 copies - 3 average
Essence Scatter
2 copies - 2 average
Sweltering Suns
2 copies - 2 average
Dragonmaster Outcast
2 copies - 2 average
Release the Gremlins
1 copies - 1 average
Sphinx of the Final Word
1 copies - 1 average
Void Shatter
1 copies - 1 average