Most played cards in 12 - Post:

1 Decks
Glimmerpost
4 copies - 4 average
Ancient Tomb
4 copies - 4 average
Chalice of the Void
4 copies - 4 average
Cloudpost
4 copies - 4 average
Karn, the Great Creator
4 copies - 4 average
Sphere of Resistance
4 copies - 4 average
Leyline of the Void
3 copies - 3 average
Thought-Knot Seer
3 copies - 3 average
Grim Monolith
3 copies - 3 average
Sorcerous Spyglass
3 copies - 3 average
Vesuva
3 copies - 3 average
Forsaken Monument
3 copies - 3 average
Basalt Monolith
2 copies - 2 average
Ugin, the Spirit Dragon
2 copies - 2 average
Ugin, the Ineffable
2 copies - 2 average
Walking Ballista
2 copies - 2 average
Golos, Tireless Pilgrim
2 copies - 2 average
Stonecoil Serpent
2 copies - 2 average
Blast Zone
1 copies - 1 average
Liquimetal Coating
1 copies - 1 average