Most played cards in Temur:

3 Decks
Brainstorm
12 copies - 4 average
Lightning Bolt
12 copies - 4 average
Misty Rainforest
12 copies - 4 average
Wasteland
12 copies - 4 average
Force of Will
12 copies - 4 average
Arcum's Astrolabe
10 copies - 3.33 average
Ice-Fang Coatl
10 copies - 3.33 average
Scalding Tarn
10 copies - 3.33 average
Oko, Thief of Crowns
9 copies - 3 average
Ponder
8 copies - 2.67 average
Snow-Covered Island
8 copies - 2.67 average
Submerge
7 copies - 2.33 average
Pyroblast
7 copies - 2.33 average
Uro, Titan of Nature's Wrath
7 copies - 2.33 average
Tropical Island
6 copies - 2 average
Volcanic Island
6 copies - 2 average
Dreadhorde Arcanist
6 copies - 2 average
Narset, Parter of Veils
6 copies - 2 average
Force of Negation
5 copies - 1.67 average
Surgical Extraction
5 copies - 1.67 average