Most played cards in Burn:

1 Decks
Shock
4 copies - 4 average
Bloodstained Mire
4 copies - 4 average
Wooded Foothills
4 copies - 4 average
Lightning Bolt
4 copies - 4 average
Chain Lightning
4 copies - 4 average
Raging Goblin
4 copies - 4 average
Tarmogoyf
4 copies - 4 average
Kird Ape
4 copies - 4 average
Wild Nacatl
4 copies - 4 average
Taiga
3 copies - 3 average
Wasteland
3 copies - 3 average
Pithing Needle
3 copies - 3 average
Grim Lavamancer
3 copies - 3 average
Rancor
3 copies - 3 average
Price of Progress
3 copies - 3 average
Tormod's Crypt
3 copies - 3 average
Pyroblast
2 copies - 2 average
Red Elemental Blast
2 copies - 2 average
Plateau
2 copies - 2 average
Sylvan Library
2 copies - 2 average