Most played cards in UWB skill:

1 Decks
Tundra
4 copies - 4 average
Savannah Lions
4 copies - 4 average
Disenchant
4 copies - 4 average
Blue Elemental Blast
4 copies - 4 average
Mishra's Factory
4 copies - 4 average
Serendib Efreet
4 copies - 4 average
Serra Angel
4 copies - 4 average
Swords to Plowshares
4 copies - 4 average
Counterspell
4 copies - 4 average
Strip Mine
3 copies - 3 average
Control Magic
2 copies - 2 average
Power Sink
2 copies - 2 average
Maze of Ith
2 copies - 2 average
Greater Realm of Preservation
2 copies - 2 average
Psionic Blast
2 copies - 2 average
Library of Alexandria
1 copies - 1 average
Divine Offering
1 copies - 1 average
Circle of Protection: Red
1 copies - 1 average
City in a Bottle
1 copies - 1 average
City of Brass
1 copies - 1 average