Most played cards in Tide control:

243 Decks
Counterspell
916 copies - 3.77 average
Mishra's Factory
894 copies - 3.68 average
Impulse
837 copies - 3.44 average
Parallax Tide
736 copies - 3.03 average
Fact or Fiction
670 copies - 2.76 average
Mana Leak
617 copies - 2.54 average
Chain of Vapor
584 copies - 2.4 average
Annul
578 copies - 2.38 average
Faerie Conclave
569 copies - 2.34 average
Stifle
541 copies - 2.23 average
Powder Keg
512 copies - 2.11 average
Swords to Plowshares
411 copies - 1.69 average
Flooded Strand
403 copies - 1.66 average
Standstill
396 copies - 1.63 average
Blue Elemental Blast
390 copies - 1.6 average
Adarkar Wastes
389 copies - 1.6 average
Hydroblast
371 copies - 1.53 average
Seal of Cleansing
361 copies - 1.49 average
Force Spike
298 copies - 1.23 average
Quicksand
295 copies - 1.21 average