Most played cards in Arcum Dagsson:

3 Decks
Mox Diamond
3 copies - 1 average
Mana Crypt
3 copies - 1 average
Mana Vault
3 copies - 1 average
Myr Turbine
3 copies - 1 average
Pithing Needle
3 copies - 1 average
Paradox Engine
3 copies - 1 average
Lotus Petal
3 copies - 1 average
Grim Monolith
3 copies - 1 average
Swan Song
3 copies - 1 average
Pact of Negation
3 copies - 1 average
Thirst for Knowledge
3 copies - 1 average
Aetherflux Reservoir
3 copies - 1 average
Rings of Brighthearth
3 copies - 1 average
Basalt Monolith
3 copies - 1 average
Lightning Greaves
3 copies - 1 average
Sol Ring
3 copies - 1 average
Hall of the Bandit Lord
3 copies - 1 average
Svyelunite Temple
3 copies - 1 average
Saprazzan Skerry
3 copies - 1 average
Minamo, School at Water's Edge
3 copies - 1 average