Most played cards in Tron:

1 Decks
 ↓ Ancient Stirrings
4 copies – 4 avg
↓ Urza's Tower
4 copies – 4 avg
↓ Urza's Mine
4 copies – 4 avg
↓ Chromatic Sphere
4 copies – 4 avg
↓ Sylvan Scrying
4 copies – 4 avg
↓ Nature's Claim
4 copies – 4 avg
↓ Urza's Power Plant
4 copies – 4 avg
↓ Karn Liberated
4 copies – 4 avg
↓ Expedition Map
4 copies – 4 avg
↓ Chromatic Star
4 copies – 4 avg
↓ Relic of Progenitus
3 copies – 3 avg
↓ Surgical Extraction
3 copies – 3 avg
↓ Wurmcoil Engine
3 copies – 3 avg
↓ Oblivion Stone
3 copies – 3 avg
↓ Thought-Knot Seer
2 copies – 2 avg
↓ Thragtusk
2 copies – 2 avg
↓ Ulamog, the Ceaseless Hunger
2 copies – 2 avg
↓ Walking Ballista
2 copies – 2 avg
↓ Ugin, the Spirit Dragon
2 copies – 2 avg
↓ Dismember
2 copies – 2 avg