Most played cards in U/G Control:

3 Decks
Sakura-Tribe Elder
12 copies - 4 average
Eternal Witness
12 copies - 4 average
Mana Leak
11 copies - 3.67 average
Birds of Paradise
8 copies - 2.67 average
Bribery
8 copies - 2.67 average
Troll Ascetic
7 copies - 2.33 average
Solemn Simulacrum
7 copies - 2.33 average
Condescend
7 copies - 2.33 average
Rude Awakening
7 copies - 2.33 average
Echoing Truth
5 copies - 1.67 average
Molder Slug
4 copies - 1.33 average
Plow Under
4 copies - 1.33 average
Aether Vial
4 copies - 1.33 average
Thirst for Knowledge
4 copies - 1.33 average
Vedalken Shackles
4 copies - 1.33 average
Meloku the Clouded Mirror
4 copies - 1.33 average
4 copies - 1.33 average
Rewind
4 copies - 1.33 average
Viridian Shaman
4 copies - 1.33 average
Spiketail Hatchling
4 copies - 1.33 average