Most played cards in Most:

1 Decks
Aether Vial
4 copies – 4 avg
Force of Will
4 copies – 4 avg
Fauna Shaman
4 copies – 4 avg
Mother of Runes
4 copies – 4 avg
Birds of Paradise
3 copies – 3 avg
Green Sun's Zenith
3 copies – 3 avg
Teferi, Time Raveler
3 copies – 3 avg
Tropical Island
3 copies – 3 avg
Meddling Mage
3 copies – 3 avg
Noble Hierarch
3 copies – 3 avg
Misty Rainforest
3 copies – 3 avg
Swan Song
2 copies – 2 avg
Surgical Extraction
2 copies – 2 avg
Wooded Foothills
2 copies – 2 avg
Savannah
2 copies – 2 avg
Natural Order
2 copies – 2 avg
Quirion Ranger
1 copies – 1 avg
Hullbreacher
1 copies – 1 avg
Grist, the Hunger Tide
1 copies – 1 avg
Dryad Arbor
1 copies – 1 avg