Most played cards in Oath:

199 Decks
Force of Will
791 copies - 3.97 average
Oath of Druids
790 copies - 3.97 average
Forbidden Orchard
732 copies - 3.68 average
Preordain
660 copies - 3.32 average
Pyroblast
559 copies - 2.81 average
Nature's Claim
547 copies - 2.75 average
Oko, Thief of Crowns
501 copies - 2.52 average
Tropical Island
498 copies - 2.5 average
Ravenous Trap
398 copies - 2 average
Volcanic Island
389 copies - 1.95 average
Soul-Guide Lantern
358 copies - 1.8 average
Veil of Summer
307 copies - 1.54 average
Flusterstorm
272 copies - 1.37 average
Flooded Strand
265 copies - 1.33 average
Misty Rainforest
249 copies - 1.25 average
Polluted Delta
244 copies - 1.23 average
Force of Negation
236 copies - 1.19 average
Scalding Tarn
224 copies - 1.13 average
Abrade
222 copies - 1.12 average
Ancient Grudge
201 copies - 1.01 average