Most played cards in UWRb:

1 Decks
Volcanic Island
5 copies - 5 average
Tundra
4 copies - 4 average
Savannah Lions
4 copies - 4 average
Mishra's Factory
4 copies - 4 average
Lightning Bolt
4 copies - 4 average
Serendib Efreet
4 copies - 4 average
Black Vise
4 copies - 4 average
Psionic Blast
4 copies - 4 average
City of Brass
3 copies - 3 average
Shatter
3 copies - 3 average
Red Elemental Blast
3 copies - 3 average
Blue Elemental Blast
3 copies - 3 average
Swords to Plowshares
3 copies - 3 average
Disenchant
3 copies - 3 average
Su-Chi
3 copies - 3 average
Counterspell
2 copies - 2 average
Fireball
2 copies - 2 average
Mox Emerald
1 copies - 1 average
Mox Pearl
1 copies - 1 average
Mox Ruby
1 copies - 1 average