Most played cards in Gruul Aggro:

1 Decks
Lightning Bolt
4 copies - 4 average
Faithless Looting
4 copies - 4 average
Werebear
4 copies - 4 average
Golgari Brownscale
4 copies - 4 average
Basking Rootwalla
4 copies - 4 average
Wild Mongrel
4 copies - 4 average
Rugged Highlands
4 copies - 4 average
Curse of the Pierced Heart
3 copies - 3 average
Tranquility
3 copies - 3 average
Fiery Temper
3 copies - 3 average
Blastoderm
3 copies - 3 average
Evolving Wilds
3 copies - 3 average
Arrogant Wurm
3 copies - 3 average
Rancor
3 copies - 3 average
Feed the Clan
2 copies - 2 average
Ancient Grudge
2 copies - 2 average
Pyroblast
2 copies - 2 average
Flame Jab
2 copies - 2 average
Electrickery
2 copies - 2 average
Gathan Raiders
2 copies - 2 average