Most played cards in URB destroy:

1 Decks
 ↓ Mishra's Factory
4 copies – 4 avg
↓ Sinkhole
4 copies – 4 avg
↓ Stone Rain
4 copies – 4 avg
↓ Underground Sea
4 copies – 4 avg
↓ Badlands
4 copies – 4 avg
↓ Black Vise
4 copies – 4 avg
↓ Red Elemental Blast
4 copies – 4 avg
↓ Hurkyl's Recall
3 copies – 3 avg
↓ Maze of Ith\n4 Gloom
3 copies – 3 avg
↓ Nether Void
3 copies – 3 avg
↓ Lightning Bolt
3 copies – 3 avg
↓ Volcanic Island
2 copies – 2 avg
↓ City in a Bottle
2 copies – 2 avg
↓ Blue Elemental Blast
2 copies – 2 avg
↓ Control Magic
2 copies – 2 avg
↓ Ivory Tower
2 copies – 2 avg
↓ City of Brass
1 copies – 1 avg
↓ Library of Alexandria
1 copies – 1 avg
↓ Strip Mine
1 copies – 1 avg
↓ Mox Sapphire
1 copies – 1 avg