Most played cards in BGW Rock:

1 Decks
Golgari Signet
4 copies - 4 average
Godless Shrine
4 copies - 4 average
Loxodon Hierarch
4 copies - 4 average
Mortify
4 copies - 4 average
Temple Garden
4 copies - 4 average
Rolling Spoil
4 copies - 4 average
Overgrown Tomb
4 copies - 4 average
Farseek
4 copies - 4 average
Carven Caryatid
4 copies - 4 average
Crime // Punishment
4 copies - 4 average
Orzhov Pontiff
3 copies - 3 average
Angel of Despair
3 copies - 3 average
Culling Sun
3 copies - 3 average
Skeletal Vampire
3 copies - 3 average
Congregation at Dawn
3 copies - 3 average
Grave-Shell Scarab
2 copies - 2 average
Shadow of Doubt
2 copies - 2 average
Putrefy
2 copies - 2 average
Bottled Cloister
2 copies - 2 average
Debtors' Knell
1 copies - 1 average