Most played cards in Night Shift:

4 Decks
Creeping Tar Pit
16 copies - 4 average
Marsh Flats
16 copies - 4 average
Squadron Hawk
16 copies - 4 average
Celestial Colonnade
16 copies - 4 average
Darkslick Shores
15 copies - 3.75 average
Preordain
14 copies - 3.5 average
Inquisition of Kozilek
13 copies - 3.25 average
Glacial Fortress
12 copies - 3 average
Flashfreeze
12 copies - 3 average
Emeria Angel
12 copies - 3 average
Disfigure
11 copies - 2.75 average
Mana Leak
9 copies - 2.25 average
Into the Roil
8 copies - 2 average
Oblivion Ring
8 copies - 2 average
Day of Judgment
7 copies - 1.75 average
Gravitational Shift
7 copies - 1.75 average
Go for the Throat
7 copies - 1.75 average
Despise
7 copies - 1.75 average
Gideon Jura
7 copies - 1.75 average
Duress
7 copies - 1.75 average