Most played cards in Red Deck Wins:

1 Decks
Snow-Covered Mountain
7 copies - 7 average
Bomat Courier
4 copies - 4 average
Price of Progress
4 copies - 4 average
Guerrilla Tactics
4 copies - 4 average
Rift Bolt
4 copies - 4 average
Faerie Macabre
4 copies - 4 average
Lightning Bolt
4 copies - 4 average
Goblin Guide
4 copies - 4 average
Eidolon of the Great Revel
4 copies - 4 average
Chain Lightning
4 copies - 4 average
Monastery Swiftspear
4 copies - 4 average
Lava Spike
4 copies - 4 average
Flame Rift
4 copies - 4 average
Fireblast
3 copies - 3 average
Phyrexian Revoker
2 copies - 2 average
Karakas
2 copies - 2 average
Pithing Needle
2 copies - 2 average
Ashen Rider
1 copies - 1 average