Most played cards in Bladestorm:

2 Decks
Sacred Foundry
8 copies - 4 average
Sedge Sliver
8 copies - 4 average
Sidewinder Sliver
8 copies - 4 average
Lightning Helix
8 copies - 4 average
Sinew Sliver
8 copies - 4 average
Cautery Sliver
8 copies - 4 average
Blood Crypt
8 copies - 4 average
Dark Confidant
8 copies - 4 average
Essence Sliver
7 copies - 3.5 average
Godless Shrine
6 copies - 3 average
Gemstone Mine
5 copies - 2.5 average
Tribal Flames
4 copies - 2 average
Battlefield Forge
4 copies - 2 average
Incinerate
4 copies - 2 average
Extirpate
4 copies - 2 average
Shadow Guildmage
4 copies - 2 average
Seal of Fire
4 copies - 2 average
Watery Grave
3 copies - 1.5 average
Terror
3 copies - 1.5 average
Hide // Seek
3 copies - 1.5 average