Most played cards in Solidarity:

64 Decks
Brainstorm
256 copies - 4 average
Force of Will
253 copies - 3.95 average
High Tide
252 copies - 3.94 average
Meditate
248 copies - 3.88 average
Reset
244 copies - 3.81 average
Impulse
242 copies - 3.78 average
Turnabout
241 copies - 3.77 average
Polluted Delta
199 copies - 3.11 average
Remand
193 copies - 3.02 average
Flooded Strand
192 copies - 3 average
Cunning Wish
190 copies - 2.97 average
Brain Freeze
186 copies - 2.91 average
Opt
159 copies - 2.48 average
Flash of Insight
114 copies - 1.78 average
Hydroblast
105 copies - 1.64 average
Twincast
102 copies - 1.59 average
89 copies - 1.39 average
Disrupt
86 copies - 1.34 average
Echoing Truth
86 copies - 1.34 average
Wipe Away
72 copies - 1.13 average