Most played cards in Izzet Delver:

1 Decks
Thought Scour
4 copies - 4 average
Lightning Bolt
4 copies - 4 average
Spirebluff Canal
4 copies - 4 average
Mishra's Bauble
4 copies - 4 average
Scalding Tarn
4 copies - 4 average
Counterspell
4 copies - 4 average
Serum Visions
4 copies - 4 average
Murktide Regent
4 copies - 4 average
Delver of Secrets
4 copies - 4 average
Expressive Iteration
4 copies - 4 average
Dragon's Rage Channeler
4 copies - 4 average
Steam Vents
3 copies - 3 average
Unholy Heat
3 copies - 3 average
Ragavan, Nimble Pilferer
3 copies - 3 average
Soul-Guide Lantern
2 copies - 2 average
Force of Negation
2 copies - 2 average
Engineered Explosives
2 copies - 2 average
Subtlety
2 copies - 2 average
Spell Pierce
2 copies - 2 average
Misty Rainforest
2 copies - 2 average