Most played cards in Karn:

1 Decks
 ↓ Urza's Tower
4 copies – 4 avg
↓ Kozilek's Command
4 copies – 4 avg
↓ Planar Nexus
4 copies – 4 avg
↓ Karn, the Great Creator
4 copies – 4 avg
↓ Cloudpost
4 copies – 4 avg
↓ Force of Will
4 copies – 4 avg
↓ Chalice of the Void
4 copies – 4 avg
↓ Ancient Tomb
4 copies – 4 avg
↓ The One Ring
4 copies – 4 avg
↓ Stock Up
4 copies – 4 avg
↓ Tishana's Tidebinder
3 copies – 3 avg
↓ Sink into Stupor
3 copies – 3 avg
↓ Force of Negation
3 copies – 3 avg
↓ Eldrazi Confluence
2 copies – 2 avg
↓ Flusterstorm
2 copies – 2 avg
↓ Disruptor Flute
2 copies – 2 avg
↓ Impulse
2 copies – 2 avg
↓ Ugin, Eye of the Storms
2 copies – 2 avg
↓ Glimmerpost
2 copies – 2 avg
↓ Faerie Macabre
2 copies – 2 avg