Most played cards in Grixis Pyromancer:

1673 Decks
Brainstorm
6676 copies - 3.99 average
Force of Will
6643 copies - 3.97 average
Ponder
6633 copies - 3.96 average
Lightning Bolt
6470 copies - 3.87 average
Delver of Secrets
6096 copies - 3.64 average
Wasteland
6066 copies - 3.63 average
Daze
6061 copies - 3.62 average
Deathrite Shaman
5288 copies - 3.16 average
Gitaxian Probe
5091 copies - 3.04 average
Polluted Delta
5011 copies - 3 average
Young Pyromancer
4653 copies - 2.78 average
Volcanic Island
4623 copies - 2.76 average
Underground Sea
4056 copies - 2.42 average
Cabal Therapy
3745 copies - 2.24 average
Gurmag Angler
3414 copies - 2.04 average
Surgical Extraction
3403 copies - 2.03 average
Scalding Tarn
3011 copies - 1.8 average
Flooded Strand
2907 copies - 1.74 average
Pyroblast
2889 copies - 1.73 average
True-Name Nemesis
2479 copies - 1.48 average