Most played cards in Jeskai:

4 Decks
Lightning Bolt
15 copies - 3.75 average
Ancient Den
15 copies - 3.75 average
Galvanic Blast
12 copies - 3 average
Prophetic Prism
12 copies - 3 average
Great Furnace
12 copies - 3 average
Mulldrifter
12 copies - 3 average
Ichor Wellspring
12 copies - 3 average
Pyroblast
12 copies - 3 average
Glint Hawk
12 copies - 3 average
Kor Skyfisher
12 copies - 3 average
Journey to Nowhere
10 copies - 2.5 average
Swiftwater Cliffs
9 copies - 2.25 average
Forgotten Cave
9 copies - 2.25 average
Electrickery
8 copies - 2 average
Kuldotha Rebirth
8 copies - 2 average
Tranquil Cove
7 copies - 1.75 average
Firebolt
7 copies - 1.75 average
Circle of Protection: Red
7 copies - 1.75 average
Lone Missionary
6 copies - 1.5 average
Secluded Steppe
6 copies - 1.5 average