Most played cards in Walking Dead:

3 Decks
Verdant Catacombs
12 copies - 4 average
Marsh Flats
12 copies - 4 average
Cabal Therapy
12 copies - 4 average
Gravecrawler
12 copies - 4 average
Deathrite Shaman
10 copies - 3.33 average
Thoughtseize
10 copies - 3.33 average
Abrupt Decay
8 copies - 2.67 average
Carrion Feeder
7 copies - 2.33 average
Tidehollow Sculler
7 copies - 2.33 average
Goblin Bombardment
7 copies - 2.33 average
Lingering Souls
7 copies - 2.33 average
Badlands
6 copies - 2 average
Surgical Extraction
6 copies - 2 average
Dark Confidant
6 copies - 2 average
Bloodghast
6 copies - 2 average
Liliana of the Veil
6 copies - 2 average
Scrubland
5 copies - 1.67 average
Bayou
5 copies - 1.67 average
Windswept Heath
4 copies - 1.33 average
Toxic Deluge
4 copies - 1.33 average