Most played cards in Tax Edge:

3 Decks
Disenchant
12 copies - 4 average
Ivory Tower
12 copies - 4 average
Land Tax
12 copies - 4 average
Red Elemental Blast
11 copies - 3.67 average
Swords to Plowshares
9 copies - 3 average
Plateau
8 copies - 2.67 average
Land's Edge
8 copies - 2.67 average
Lightning Bolt
7 copies - 2.33 average
Blood Moon
7 copies - 2.33 average
Winds of Change
5 copies - 1.67 average
Fellwar Stone
5 copies - 1.67 average
Sylvan Library
4 copies - 1.33 average
Ball Lightning
4 copies - 1.33 average
City in a Bottle
4 copies - 1.33 average
Chain Lightning
4 copies - 1.33 average
Circle of Protection: Red
3 copies - 1 average
Balance
3 copies - 1 average
Serra Angel
3 copies - 1 average
Howling Mine
3 copies - 1 average
Armageddon
3 copies - 1 average