Most played cards in UR Aggro:

1 Decks
Thing in the Ice
4 copies - 4 average
Spirebluff Canal
4 copies - 4 average
Horribly Awry
4 copies - 4 average
Wandering Fumarole
4 copies - 4 average
Shock
4 copies - 4 average
Aether Hub
4 copies - 4 average
Negate
4 copies - 4 average
Torrential Gearhulk
4 copies - 4 average
Glimmer of Genius
4 copies - 4 average
Anticipate
4 copies - 4 average
Harnessed Lightning
4 copies - 4 average
Disallow
3 copies - 3 average
Radiant Flames
2 copies - 2 average
Dragonmaster Outcast
2 copies - 2 average
Release the Gremlins
2 copies - 2 average
Dispel
2 copies - 2 average
Confirm Suspicions
2 copies - 2 average
Ceremonious Rejection
2 copies - 2 average
Metallurgic Summonings
1 copies - 1 average
Void Shatter
1 copies - 1 average