Most played cards in Nicol Bolas, the Ravager:

2 Decks
Fact or Fiction
2 copies - 1 average
Dreadbore
2 copies - 1 average
Dismember
2 copies - 1 average
Fatal Push
2 copies - 1 average
Impulse
2 copies - 1 average
Go for the Throat
2 copies - 1 average
Arid Mesa
2 copies - 1 average
Disallow
2 copies - 1 average
Demonic Tutor
2 copies - 1 average
Anger of the Gods
2 copies - 1 average
Abrade
2 copies - 1 average
True-Name Nemesis
2 copies - 1 average
Collective Brutality
2 copies - 1 average
Counterspell
2 copies - 1 average
Damnation
2 copies - 1 average
Cryptic Command
2 copies - 1 average
Inquisition of Kozilek
2 copies - 1 average
Logic Knot
2 copies - 1 average
Toxic Deluge
2 copies - 1 average
Thoughtseize
2 copies - 1 average