Most played cards in Eldrazi:

1 Decks
Eldrazi Temple
4 copies - 4 average
Swords to Plowshares
4 copies - 4 average
Chalice of the Void
4 copies - 4 average
Mox Diamond
4 copies - 4 average
Wasteland
4 copies - 4 average
Thought-Knot Seer
4 copies - 4 average
Cavern of Souls
4 copies - 4 average
Ancient Tomb
4 copies - 4 average
Reality Smasher
4 copies - 4 average
Thalia, Guardian of Thraben
4 copies - 4 average
Karakas
3 copies - 3 average
Savannah
3 copies - 3 average
Containment Priest
3 copies - 3 average
Rest in Peace
3 copies - 3 average
Eldrazi Displacer
3 copies - 3 average
Stoneforge Mystic
3 copies - 3 average
Once Upon a Time
3 copies - 3 average
Deafening Silence
2 copies - 2 average
Snow-Covered Plains
2 copies - 2 average
Disenchant
2 copies - 2 average