Most played cards in Izzet Prowess:

6 Decks
Manamorphose
24 copies - 4 average
Lightning Bolt
24 copies - 4 average
Stormwing Entity
24 copies - 4 average
Soul-Scar Mage
24 copies - 4 average
Monastery Swiftspear
24 copies - 4 average
Lava Dart
24 copies - 4 average
Spirebluff Canal
23 copies - 3.83 average
Light Up the Stage
20 copies - 3.33 average
Fiery Islet
18 copies - 3 average
Abrade
18 copies - 3 average
Aether Gust
17 copies - 2.83 average
Dragon's Claw
17 copies - 2.83 average
Opt
16 copies - 2.67 average
Mutagenic Growth
16 copies - 2.67 average
Gut Shot
16 copies - 2.67 average
Wooded Foothills
15 copies - 2.5 average
Sprite Dragon
14 copies - 2.33 average
Steam Vents
14 copies - 2.33 average
Bedlam Reveler
13 copies - 2.17 average
Arid Mesa
10 copies - 1.67 average