Most played cards in Urza Oko:

3 Decks
Urza, Lord High Artificer
12 copies - 4 average
Emry, Lurker of the Loch
12 copies - 4 average
Mox Opal
11 copies - 3.67 average
Lotus Petal
11 copies - 3.67 average
Snow-Covered Island
10 copies - 3.33 average
Mishra's Bauble
10 copies - 3.33 average
Force of Will
8 copies - 2.67 average
Chalice of the Void
8 copies - 2.67 average
Karn, the Great Creator
8 copies - 2.67 average
Seat of the Synod
7 copies - 2.33 average
Oko, Thief of Crowns
6 copies - 2 average
Ancient Tomb
6 copies - 2 average
Polluted Delta
5 copies - 1.67 average
Force of Negation
5 copies - 1.67 average
Veil of Summer
4 copies - 1.33 average
Gilded Goose
4 copies - 1.33 average
Snow-Covered Forest
4 copies - 1.33 average
Kinnan, Bonder Prodigy
4 copies - 1.33 average
Plague Engineer
4 copies - 1.33 average
Brainstorm
4 copies - 1.33 average