Most played cards in Death and Taxes:

65 Decks
Thalia, Guardian of Thraben
253 copies - 3.89 average
Wasteland
229 copies - 3.52 average
Luminarch Aspirant
207 copies - 3.18 average
Containment Priest
166 copies - 2.55 average
Archon of Emeria
154 copies - 2.37 average
Spirit of the Labyrinth
150 copies - 2.31 average
Leonin Arbiter
142 copies - 2.18 average
Leonin Relic-Warder
128 copies - 1.97 average
Cavern of Souls
127 copies - 1.95 average
Path to Exile
125 copies - 1.92 average
Kataki, War's Wage
111 copies - 1.71 average
Stony Silence
103 copies - 1.58 average
Ghost Quarter
98 copies - 1.51 average
Deafening Silence
92 copies - 1.42 average
Mother of Runes
86 copies - 1.32 average
Swords to Plowshares
86 copies - 1.32 average
Karakas
82 copies - 1.26 average
Snow-Covered Plains
76 copies - 1.17 average
Ravenous Trap
65 copies - 1 average
Mox Pearl
64 copies - 0.98 average