Most played cards in Yorion Zenith:

3 Decks
Swords to Plowshares
12 copies - 4 average
Force of Will
12 copies - 4 average
Brainstorm
12 copies - 4 average
Misty Rainforest
12 copies - 4 average
Prismatic Vista
12 copies - 4 average
Green Sun's Zenith
12 copies - 4 average
Prismatic Ending
12 copies - 4 average
Ponder
12 copies - 4 average
Abundant Growth
12 copies - 4 average
Windswept Heath
12 copies - 4 average
Ice-Fang Coatl
12 copies - 4 average
Uro, Titan of Nature's Wrath
9 copies - 3 average
Wasteland
9 copies - 3 average
Endurance
7 copies - 2.33 average
Plague Engineer
7 copies - 2.33 average
Force of Negation
7 copies - 2.33 average
Pyroblast
6 copies - 2 average
Flusterstorm
6 copies - 2 average
Snow-Covered Forest
5 copies - 1.67 average
Carpet of Flowers
5 copies - 1.67 average