Most played cards in Red Deck Wins:

1 Decks
Snow-Covered Mountain
23 copies - 23 average
Simian Spirit Guide
4 copies - 4 average
Skred
4 copies - 4 average
Ashenmoor Gouger
4 copies - 4 average
Sulfurous Blast
4 copies - 4 average
Magus of the Moon
4 copies - 4 average
Blood Knight
4 copies - 4 average
Figure of Destiny
4 copies - 4 average
Demigod of Revenge
4 copies - 4 average
Flame Javelin
4 copies - 4 average
Incinerate
4 copies - 4 average
Smash to Smithereens
3 copies - 3 average
Lash Out
3 copies - 3 average
Dragon's Claw
3 copies - 3 average
Unwilling Recruit
2 copies - 2 average
Keldon Megaliths
1 copies - 1 average