Most played cards in Oath of Druids:

4 Decks
Forbidden Orchard
4 copies - 1 average
Force of Will
4 copies - 1 average
Nature's Claim
4 copies - 1 average
Oath of Druids
4 copies - 1 average
Pyroblast
4 copies - 1 average
Force of Vigor
3 copies - 0.75 average
Tropical Island
3 copies - 0.75 average
Preordain
3 copies - 0.75 average
Soul-Guide Lantern
3 copies - 0.75 average
Surgical Extraction
3 copies - 0.75 average
Oko, Thief of Crowns
3 copies - 0.75 average
Wrenn and Six
3 copies - 0.75 average
Mindbreak Trap
2 copies - 0.5 average
Boseiju, Who Endures
2 copies - 0.5 average
Flusterstorm
2 copies - 0.5 average
Flooded Strand
2 copies - 0.5 average
Wasteland
2 copies - 0.5 average
Volcanic Island
2 copies - 0.5 average
Sylvan Library
1 copies - 0.25 average
The Tabernacle at Pendrell Vale
1 copies - 0.25 average