Most played cards in Goblins:

1 Decks
Goblin Piledriver
4 copies - 4 average
Goblin Lackey
4 copies - 4 average
Mogg Fanatic
4 copies - 4 average
Goblin Grenade
4 copies - 4 average
Wooded Foothills
4 copies - 4 average
Red Elemental Blast
4 copies - 4 average
Lightning Bolt
4 copies - 4 average
Barbarian Ring
4 copies - 4 average
Bloodstained Mire
4 copies - 4 average
Goblin Cadets
4 copies - 4 average
Siege-Gang Commander
3 copies - 3 average
Null Rod
3 copies - 3 average
Tormod's Crypt
3 copies - 3 average
Ensnaring Bridge
3 copies - 3 average
Reckless Charge
3 copies - 3 average
Incinerate
3 copies - 3 average
Chain Lightning
3 copies - 3 average
Lotus Petal
3 copies - 3 average
Fireblast
2 copies - 2 average
Blood Moon
2 copies - 2 average