Most played cards in Tax Aggro:

3 Decks
Ironclaw Orcs
12 copies - 4 average
Icatian Javelineers
12 copies - 4 average
Land Tax
12 copies - 4 average
Swords to Plowshares
12 copies - 4 average
Plateau
12 copies - 4 average
Savannah Lions
12 copies - 4 average
Disenchant
12 copies - 4 average
Chain Lightning
12 copies - 4 average
Lightning Bolt
12 copies - 4 average
Red Elemental Blast
10 copies - 3.33 average
Winds of Change
9 copies - 3 average
Divine Offering
8 copies - 2.67 average
Ivory Tower
8 copies - 2.67 average
Mishra's Factory
8 copies - 2.67 average
Land's Edge
6 copies - 2 average
City in a Bottle
4 copies - 1.33 average
Aeolipile
4 copies - 1.33 average
Blood Moon
4 copies - 1.33 average
Order of Leitbur
4 copies - 1.33 average
Armageddon
3 copies - 1 average