Most played cards in Blue Tron:

4 Decks
Condescend
16 copies – 4 avg
Urza's Tower
16 copies – 4 avg
Expedition Map
16 copies – 4 avg
Remand
16 copies – 4 avg
Thirst for Knowledge
16 copies – 4 avg
Urza's Power Plant
16 copies – 4 avg
Urza's Mine
16 copies – 4 avg
Repeal
15 copies – 3.75 avg
Mindslaver
8 copies – 2 avg
Talisman of Dominance
8 copies – 2 avg
Dismember
7 copies – 1.75 avg
Treasure Mage
7 copies – 1.75 avg
Solemn Simulacrum
7 copies – 1.75 avg
Hibernation
6 copies – 1.5 avg
Snapcaster Mage
6 copies – 1.5 avg
Oblivion Stone
6 copies – 1.5 avg
Spell Pierce
6 copies – 1.5 avg
Wurmcoil Engine
6 copies – 1.5 avg
Spellskite
6 copies – 1.5 avg
Chalice of the Void
5 copies – 1.25 avg