Most played cards in Jewel:

1 Decks
Urza's Saga
4 copies - 4 average
Coveted Jewel
4 copies - 4 average
The One Ring
4 copies - 4 average
Transmute Artifact
4 copies - 4 average
Force of Will
4 copies - 4 average
Force of Negation
4 copies - 4 average
Copy Artifact
4 copies - 4 average
Grim Monolith
4 copies - 4 average
Lotus Petal
4 copies - 4 average
Ancient Tomb
4 copies - 4 average
Urza's Tower
4 copies - 4 average
Planar Nexus
4 copies - 4 average
Phyrexian Metamorph
4 copies - 4 average
Show and Tell
3 copies - 3 average
Vexing Bauble
3 copies - 3 average
Defense Grid
3 copies - 3 average
Lodestone Golem
2 copies - 2 average
Dismember
2 copies - 2 average
Chaos Defiler
1 copies - 1 average
Kozilek's Command
1 copies - 1 average