Most played cards in UR Control:

4 Decks
City of Brass
10 copies - 2.5 average
Volcanic Island
10 copies - 2.5 average
Lightning Bolt
9 copies - 2.25 average
Counterspell
8 copies - 2 average
Control Magic
7 copies - 1.75 average
Red Elemental Blast
5 copies - 1.25 average
Shatter
5 copies - 1.25 average
Fellwar Stone
4 copies - 1 average
Rukh Egg
4 copies - 1 average
Mana Drain
4 copies - 1 average
Strip Mine
4 copies - 1 average
Jayemdae Tome
4 copies - 1 average
Blood Moon
4 copies - 1 average
Chaos Orb
4 copies - 1 average
Blue Elemental Blast
4 copies - 1 average
Plateau
4 copies - 1 average
Triskelion
3 copies - 0.75 average
Chain Lightning
3 copies - 0.75 average
Steal Artifact
3 copies - 0.75 average
Desert
3 copies - 0.75 average