Most played cards in G/U Control:

2 Decks
Mana Leak
8 copies - 4 average
Sakura-Tribe Elder
8 copies - 4 average
Eternal Witness
7 copies - 3.5 average
Circle of Protection: Red
7 copies - 3.5 average
Plow Under
6 copies - 3 average
Troll Ascetic
6 copies - 3 average
Kodama's Reach
6 copies - 3 average
City of Brass
6 copies - 3 average
Bribery
5 copies - 2.5 average
Hibernation
5 copies - 2.5 average
Echoing Truth
5 copies - 2.5 average
Condescend
4 copies - 2 average
Naturalize
4 copies - 2 average
Birds of Paradise
4 copies - 2 average
Blinkmoth Nexus
4 copies - 2 average
Hinder
4 copies - 2 average
Umezawa's Jitte
3 copies - 1.5 average
Gifts Ungiven
3 copies - 1.5 average
Vedalken Shackles
3 copies - 1.5 average
Thieving Magpie
3 copies - 1.5 average