Most played cards in Turbo Depths:

2 Decks
Elvish Spirit Guide
8 copies - 4 average
Elvish Reclaimer
8 copies - 4 average
Deathrite Shaman
8 copies - 4 average
Crop Rotation
8 copies - 4 average
Once Upon a Time
8 copies - 4 average
Thoughtseize
8 copies - 4 average
Force of Vigor
8 copies - 4 average
Verdant Catacombs
8 copies - 4 average
Vampire Hexmage
8 copies - 4 average
Dark Depths
8 copies - 4 average
Thespian's Stage
8 copies - 4 average
Bayou
6 copies - 3 average
Urborg, Tomb of Yawgmoth
6 copies - 3 average
Wasteland
6 copies - 3 average
Abrupt Decay
5 copies - 2.5 average
Collector Ouphe
4 copies - 2 average
Bojuka Bog
4 copies - 2 average
Ravenous Trap
3 copies - 1.5 average
Leyline of the Void
3 copies - 1.5 average
Mox Jet
2 copies - 1 average