Most played cards in Boros:

1 Decks
Scalding Tarn
4 copies - 4 average
Plated Geopede
4 copies - 4 average
Searing Blaze
4 copies - 4 average
Steppe Lynx
4 copies - 4 average
Zektar Shrine Expedition
4 copies - 4 average
Lightning Helix
4 copies - 4 average
Path to Exile
4 copies - 4 average
Lightning Bolt
4 copies - 4 average
Goblin Guide
4 copies - 4 average
Flagstones of Trokair
4 copies - 4 average
Arid Mesa
4 copies - 4 average
Ghost Quarter
4 copies - 4 average
Refraction Trap
3 copies - 3 average
Shard Volley
3 copies - 3 average
Damping Matrix
3 copies - 3 average
Sacred Foundry
3 copies - 3 average
Jötun Grunt
3 copies - 3 average
Smash to Smithereens
3 copies - 3 average
Volcanic Fallout
3 copies - 3 average
Magma Jet
2 copies - 2 average