Most played cards in Jeskai:

2 Decks
Walking Ballista
8 copies - 4 average
Ipnu Rivulet
8 copies - 4 average
Aether Hub
8 copies - 4 average
Gate to the Afterlife
8 copies - 4 average
Minister of Inquiries
8 copies - 4 average
Angel of Invention
8 copies - 4 average
Champion of Wits
8 copies - 4 average
Trophy Mage
6 copies - 3 average
Contraband Kingpin
4 copies - 2 average
Sunscourge Champion
4 copies - 2 average
Kitesail Freebooter
4 copies - 2 average
Drowned Catacomb
4 copies - 2 average
Concealed Courtyard
4 copies - 2 average
Chart a Course
4 copies - 2 average
Negate
4 copies - 2 average
Hostage Taker
4 copies - 2 average
God-Pharaoh's Gift
4 copies - 2 average
Fairgrounds Warden
4 copies - 2 average
Glacial Fortress
4 copies - 2 average
Strategic Planning
4 copies - 2 average