Most played cards in Laelia, the Blade Reforged:

2 Decks
Snow-Covered Mountain
42 copies - 21 average
Mutavault
2 copies - 1 average
Monastery Swiftspear
2 copies - 1 average
Abbot of Keral Keep
2 copies - 1 average
Phyrexian Furnace
2 copies - 1 average
Prismatic Vista
2 copies - 1 average
Ramunap Ruins
2 copies - 1 average
Pyrokinesis
2 copies - 1 average
Mishra's Factory
2 copies - 1 average
Relic of Progenitus
2 copies - 1 average
Light Up the Stage
2 copies - 1 average
Lava Dart
2 copies - 1 average
Lightning Bolt
2 copies - 1 average
Loyal Apprentice
2 copies - 1 average
Magus of the Moon
2 copies - 1 average
Magmatic Channeler
2 copies - 1 average
Keldon Marauders
2 copies - 1 average
Rolling Earthquake
2 copies - 1 average
Stromkirk Noble
2 copies - 1 average
Spark of Creativity
2 copies - 1 average