Most played cards in Grixis Pyromaner:

1 Decks
Brainstorm
4 copies - 4 average
Delver of Secrets
4 copies - 4 average
Daze
4 copies - 4 average
Lightning Bolt
4 copies - 4 average
Ponder
4 copies - 4 average
Wasteland
4 copies - 4 average
Force of Will
4 copies - 4 average
Polluted Delta
4 copies - 4 average
Scalding Tarn
3 copies - 3 average
Volcanic Island
3 copies - 3 average
Underground Sea
3 copies - 3 average
Surgical Extraction
3 copies - 3 average
True-Name Nemesis
3 copies - 3 average
Spell Pierce
2 copies - 2 average
Pyroblast
2 copies - 2 average
Liliana's Triumph
2 copies - 2 average
Liliana, the Last Hope
2 copies - 2 average
Preordain
2 copies - 2 average
Gurmag Angler
2 copies - 2 average
Abrade
2 copies - 2 average