Most played cards in Captain America:

3 Decks
Lightning Helix
16 copies - 5.33 average
Flooded Strand
12 copies - 4 average
Counterspell
11 copies - 3.67 average
Fact or Fiction
10 copies - 3.33 average
Wrath of God
7 copies - 2.33 average
Fire // Ice
7 copies - 2.33 average
Absorb
7 copies - 2.33 average
Meddling Mage
7 copies - 2.33 average
Isochron Scepter
7 copies - 2.33 average
Exalted Angel
6 copies - 2 average
Shivan Reef
6 copies - 2 average
Sacred Foundry
5 copies - 1.67 average
Flametongue Kavu
5 copies - 1.67 average
Thirst for Knowledge
4 copies - 1.33 average
Disenchant
4 copies - 1.33 average
Sudden Shock
4 copies - 1.33 average
Coastal Tower
4 copies - 1.33 average
Steam Vents
4 copies - 1.33 average
Memory Lapse
4 copies - 1.33 average
Remand
4 copies - 1.33 average