Most played cards in Eldrazi:

76 Decks
Thought-Knot Seer
300 copies - 3.95 average
Reality Smasher
296 copies - 3.89 average
Eldrazi Temple
288 copies - 3.79 average
Ancient Tomb
285 copies - 3.75 average
Cavern of Souls
279 copies - 3.67 average
Thalia, Guardian of Thraben
275 copies - 3.62 average
Wasteland
267 copies - 3.51 average
Containment Priest
249 copies - 3.28 average
Phyrexian Revoker
242 copies - 3.18 average
Glowrider
206 copies - 2.71 average
Swords to Plowshares
175 copies - 2.3 average
Eldrazi Displacer
163 copies - 2.14 average
Kataki, War's Wage
126 copies - 1.66 average
Leyline of the Void
124 copies - 1.63 average
Thalia, Heretic Cathar
119 copies - 1.57 average
Deafening Silence
119 copies - 1.57 average
Grafdigger's Cage
115 copies - 1.51 average
Once Upon a Time
104 copies - 1.37 average
Null Rod
102 copies - 1.34 average
Karakas
92 copies - 1.21 average