Most played cards in RUG Tempo:

1 Decks
Brainstorm
4 copies - 4 average
Ponder
4 copies - 4 average
Unholy Heat
4 copies - 4 average
Mishra's Bauble
4 copies - 4 average
Daze
4 copies - 4 average
Force of Will
4 copies - 4 average
Dragon's Rage Channeler
4 copies - 4 average
Volcanic Island
4 copies - 4 average
Questing Druid // Seek the Beast
4 copies - 4 average
Murktide Regent
4 copies - 4 average
Misty Rainforest
3 copies - 3 average
Surgical Extraction
3 copies - 3 average
Wasteland
3 copies - 3 average
Preordain
2 copies - 2 average
Pyroblast
2 copies - 2 average
Meltdown
2 copies - 2 average
Force of Negation
2 copies - 2 average
Hydroblast
2 copies - 2 average
Scalding Tarn
2 copies - 2 average
Tropical Island
2 copies - 2 average