Most played cards in Tasigur, the Golden Fang:

2 Decks
Tropical Island
2 copies - 1 average
Underground Sea
2 copies - 1 average
Collective Brutality
2 copies - 1 average
Damnation
2 copies - 1 average
Watery Grave
2 copies - 1 average
Overgrown Tomb
2 copies - 1 average
Creeping Tar Pit
2 copies - 1 average
Wasteland
2 copies - 1 average
Breeding Pool
2 copies - 1 average
Hymn to Tourach
2 copies - 1 average
Thoughtseize
2 copies - 1 average
Gitaxian Probe
2 copies - 1 average
Preordain
2 copies - 1 average
Ponder
2 copies - 1 average
Liliana of the Veil
2 copies - 1 average
Life from the Loam
2 copies - 1 average
Upheaval
2 copies - 1 average
Inquisition of Kozilek
2 copies - 1 average
Toxic Deluge
2 copies - 1 average
Demonic Tutor
2 copies - 1 average