Most played cards in Gush:

3 Decks
Swords to Plowshares
12 copies - 4 average
Force of Will
12 copies - 4 average
Gush
10 copies - 3.33 average
Mental Misstep
10 copies - 3.33 average
Flooded Strand
10 copies - 3.33 average
Monastery Mentor
10 copies - 3.33 average
Tundra
9 copies - 3 average
Rest in Peace
7 copies - 2.33 average
Containment Priest
7 copies - 2.33 average
Jace, Vryn's Prodigy
7 copies - 2.33 average
Volcanic Island
6 copies - 2 average
Preordain
6 copies - 2 average
Gitaxian Probe
6 copies - 2 average
Dack Fayden
6 copies - 2 average
Scalding Tarn
6 copies - 2 average
Pyroblast
6 copies - 2 average
Polluted Delta
5 copies - 1.67 average
Stony Silence
5 copies - 1.67 average
Pithing Needle
4 copies - 1.33 average
Jace, the Mind Sculptor
4 copies - 1.33 average