Most played cards in Izzet Delver:

2 Decks
Lightning Bolt
8 copies - 4 average
Manamorphose
8 copies - 4 average
Spirebluff Canal
8 copies - 4 average
Stormwing Entity
8 copies - 4 average
Lava Dart
8 copies - 4 average
Soul-Scar Mage
8 copies - 4 average
Monastery Swiftspear
8 copies - 4 average
Light Up the Stage
7 copies - 3.5 average
Opt
7 copies - 3.5 average
Fiery Islet
6 copies - 3 average
Wooded Foothills
6 copies - 3 average
Abrade
6 copies - 3 average
Aether Gust
6 copies - 3 average
Dragon's Claw
6 copies - 3 average
Gut Shot
6 copies - 3 average
Steam Vents
5 copies - 2.5 average
Mutagenic Growth
5 copies - 2.5 average
Sprite Dragon
5 copies - 2.5 average
Tormod's Crypt
4 copies - 2 average
Bedlam Reveler
4 copies - 2 average