Most played cards in Jeskai Control:

1 Decks
Force of Will
4 copies - 4 average
Expressive Iteration
4 copies - 4 average
Murktide Regent
4 copies - 4 average
Ponder
4 copies - 4 average
Prismatic Ending
4 copies - 4 average
Swords to Plowshares
4 copies - 4 average
Pyroblast
4 copies - 4 average
Scalding Tarn
4 copies - 4 average
Brainstorm
4 copies - 4 average
Flooded Strand
4 copies - 4 average
Force of Negation
2 copies - 2 average
Dress Down
2 copies - 2 average
Tundra
2 copies - 2 average
Flusterstorm
2 copies - 2 average
Blood Moon
2 copies - 2 average
Meltdown
2 copies - 2 average
Snapcaster Mage
2 copies - 2 average
Teferi, Time Raveler
2 copies - 2 average
Narset, Parter of Veils
2 copies - 2 average
Volcanic Island
2 copies - 2 average