Most played cards in Karn Lattice:

1 Decks
Karn, the Great Creator
4 copies - 4 average
Grim Monolith
4 copies - 4 average
Mox Opal
4 copies - 4 average
Ancient Tomb
4 copies - 4 average
Voltaic Key
4 copies - 4 average
Force of Will
4 copies - 4 average
Repeal
3 copies - 3 average
Urza, Lord High Artificer
3 copies - 3 average
Defense Grid
2 copies - 2 average
Hurkyl's Recall
2 copies - 2 average
Tormod's Crypt
2 copies - 2 average
Mindbreak Trap
2 copies - 2 average
Paradox Engine
1 copies - 1 average
Mox Ruby
1 copies - 1 average
Mox Sapphire
1 copies - 1 average
Sol Ring
1 copies - 1 average
Tolarian Academy
1 copies - 1 average
Sorcerous Spyglass
1 copies - 1 average
Time Vault
1 copies - 1 average
Relic of Progenitus
1 copies - 1 average