Most played cards in Grixis Aggro:

1 Decks
Thought Scour
4 copies - 4 average
Delver of Secrets
4 copies - 4 average
Brainstorm
4 copies - 4 average
Manamorphose
4 copies - 4 average
Thermo-Alchemist
4 copies - 4 average
Ponder
4 copies - 4 average
Gurmag Angler
4 copies - 4 average
Lightning Bolt
4 copies - 4 average
Electrickery
3 copies - 3 average
Evolving Wilds
3 copies - 3 average
Swiftwater Cliffs
3 copies - 3 average
Smash to Smithereens
3 copies - 3 average
Pyroblast
3 copies - 3 average
Daze
3 copies - 3 average
Hydroblast
3 copies - 3 average
Terramorphic Expanse
2 copies - 2 average
Dispel
2 copies - 2 average
Preordain
2 copies - 2 average
Diabolic Edict
2 copies - 2 average
Stormbound Geist
2 copies - 2 average