Most played cards in UG:

1 Decks
Whirling Dervish
4 copies - 4 average
Serendib Efreet
4 copies - 4 average
Argothian Pixies
4 copies - 4 average
Crumble
4 copies - 4 average
Erhnam Djinn
4 copies - 4 average
Mishra's Factory
4 copies - 4 average
Llanowar Elves
4 copies - 4 average
Ice Storm
3 copies - 3 average
City of Brass
3 copies - 3 average
Blue Elemental Blast
3 copies - 3 average
Tropical Island
3 copies - 3 average
Energy Flux
2 copies - 2 average
Psionic Blast
2 copies - 2 average
Control Magic
2 copies - 2 average
Maze of Ith
2 copies - 2 average
Tranquility
2 copies - 2 average
Pendelhaven
2 copies - 2 average
Scavenger Folk
2 copies - 2 average
Time Walk
1 copies - 1 average
Timetwister
1 copies - 1 average