Most played cards in Tax Edge:

2 Decks
Disenchant
8 copies - 4 average
Land Tax
8 copies - 4 average
Ivory Tower
8 copies - 4 average
Plateau
8 copies - 4 average
Lightning Bolt
7 copies - 3.5 average
Red Elemental Blast
7 copies - 3.5 average
Land's Edge
7 copies - 3.5 average
Blood Moon
5 copies - 2.5 average
Swords to Plowshares
5 copies - 2.5 average
Ball Lightning
4 copies - 2 average
Winds of Change
4 copies - 2 average
Chain Lightning
4 copies - 2 average
City in a Bottle
4 copies - 2 average
Howling Mine
3 copies - 1.5 average
Circle of Protection: Red
3 copies - 1.5 average
Serra Angel
3 copies - 1.5 average
Fellwar Stone
3 copies - 1.5 average
Dust to Dust
2 copies - 1 average
Earthquake
2 copies - 1 average
Feldon's Cane
2 copies - 1 average