Most played cards in Planeswalkers Control:

5 Decks
Force of Will
20 copies - 4 average
Deathrite Shaman
16 copies - 3.2 average
Leyline of the Void
16 copies - 3.2 average
Pyroblast
16 copies - 3.2 average
Wrenn and Six
15 copies - 3 average
Tropical Island
14 copies - 2.8 average
Dack Fayden
13 copies - 2.6 average
Wasteland
13 copies - 2.6 average
Misty Rainforest
12 copies - 2.4 average
Force of Vigor
12 copies - 2.4 average
Scalding Tarn
11 copies - 2.2 average
Volcanic Island
11 copies - 2.2 average
Lightning Bolt
11 copies - 2.2 average
Flusterstorm
11 copies - 2.2 average
Oko, Thief of Crowns
11 copies - 2.2 average
Force of Negation
10 copies - 2 average
Preordain
10 copies - 2 average
Flooded Strand
8 copies - 1.6 average
Underground Sea
7 copies - 1.4 average
Polluted Delta
7 copies - 1.4 average