Most played cards in RU:

1 Decks
 ↓ Volcanic Island
4 copies – 4 avg
↓ Counterspell
4 copies – 4 avg
↓ Chain Lightning
4 copies – 4 avg
↓ Lightning Bolt
4 copies – 4 avg
↓ Shatter
4 copies – 4 avg
↓ Psionic Blast
4 copies – 4 avg
↓ Mishra's Factory
4 copies – 4 avg
↓ Black Vise
4 copies – 4 avg
↓ Maze of Ith
3 copies – 3 avg
↓ Red Elemental Blast
3 copies – 3 avg
↓ Blue Elemental Blast
3 copies – 3 avg
↓ City of Brass
2 copies – 2 avg
↓ Ball Lightning
2 copies – 2 avg
↓ Hurkyl's Recall
2 copies – 2 avg
↓ City in a Bottle
2 copies – 2 avg
↓ Hammerheim
1 copies – 1 avg
↓ Library of Alexandria
1 copies – 1 avg
↓ Strip Mine
1 copies – 1 avg
↓ Ancestral Recall
1 copies – 1 avg
↓ Black Lotus
1 copies – 1 avg