Most played cards in Orzhov:

4 Decks
Marsh Flats
16 copies - 4 average
Fatal Push
15 copies - 3.75 average
Lingering Souls
15 copies - 3.75 average
Shambling Vent
12 copies - 3 average
Concealed Courtyard
11 copies - 2.75 average
Tectonic Edge
11 copies - 2.75 average
Path to Exile
10 copies - 2.5 average
Godless Shrine
10 copies - 2.5 average
Thoughtseize
10 copies - 2.5 average
Inquisition of Kozilek
10 copies - 2.5 average
Night's Whisper
9 copies - 2.25 average
Damnation
9 copies - 2.25 average
Liliana of the Veil
8 copies - 2 average
Collective Brutality
8 copies - 2 average
Leyline of the Void
8 copies - 2 average
Fulminator Mage
7 copies - 1.75 average
Stony Silence
6 copies - 1.5 average
Gideon of the Trials
6 copies - 1.5 average
Gideon, Ally of Zendikar
5 copies - 1.25 average
Dark Confidant
4 copies - 1 average