Most played cards in Storm Combo:

138 Decks
Polluted Delta
403 copies - 2.92 average
Underground Sea
395 copies - 2.86 average
Dark Ritual
375 copies - 2.72 average
Duress
357 copies - 2.59 average
Hurkyl's Recall
356 copies - 2.58 average
Gitaxian Probe
345 copies - 2.5 average
Dark Petition
304 copies - 2.2 average
Defense Grid
260 copies - 1.88 average
Ravenous Trap
236 copies - 1.71 average
Force of Will
192 copies - 1.39 average
Cabal Ritual
179 copies - 1.3 average
Tendrils of Agony
168 copies - 1.22 average
Mox Sapphire
139 copies - 1.01 average
Ancient Tomb
137 copies - 0.99 average
Black Lotus
137 copies - 0.99 average
Mox Jet
137 copies - 0.99 average
Cabal Therapy
137 copies - 0.99 average
Brainstorm
135 copies - 0.98 average
Demonic Tutor
135 copies - 0.98 average
Yawgmoth's Will
134 copies - 0.97 average