Most played cards in Tron:

4 Decks
 ↓ Expedition Map
16 copies – 4 avg
↓ Urza's Mine
16 copies – 4 avg
↓ Urza's Power Plant
16 copies – 4 avg
↓ Urza's Tower
16 copies – 4 avg
↓ Ancient Stirrings
12 copies – 3 avg
↓ Chromatic Sphere
12 copies – 3 avg
↓ Chromatic Star
12 copies – 3 avg
↓ Karn Liberated
12 copies – 3 avg
↓ Relic of Progenitus
12 copies – 3 avg
↓ Sylvan Scrying
12 copies – 3 avg
↓ Wurmcoil Engine
12 copies – 3 avg
↓ Thought-Knot Seer
11 copies – 2.75 avg
↓ Dismember
10 copies – 2.5 avg
↓ Thragtusk
9 copies – 2.25 avg
↓ Nature's Claim
8 copies – 2 avg
↓ Oblivion Stone
7 copies – 1.75 avg
↓ Ugin, the Spirit Dragon
7 copies – 1.75 avg
↓ Ulamog, the Ceaseless Hunger
6 copies – 1.5 avg
↓ Walking Ballista
5 copies – 1.25 avg
↓ Surgical Extraction
5 copies – 1.25 avg