Six
Legendary Creature — Treefolk{2}{G}2/4
Reach Whenever Six attacks, mill three cards. You may put a land card from among them into your hand. During your turn, nonland permanent cards in your graveyard have retrace. (You may cast permanent cards from your graveyard by discarding a land card in addition to paying their other costs.)
Colour identity Green · Reach, Mill · Commander page
In short
Six has 7 listed printings; the most valuable is the Secret Lair printing from SLD at US$17.68 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.
Every Six printing
Secret Lair
Six
SLD · 2660
TCGplayer market
US$17.68
Borderless
Six
MH3 · 370
TCGplayer market
US$12.11
Prerelease
Six
PMH3 · 169s
TCGplayer market
US$9.70
Foil Etched
Six
MH3 · 484
TCGplayer market
US$8.94
Six
MH3 · 169
TCGplayer market
US$6.42
Retro Frame
Six
MH3 · 430
TCGplayer market
US$5.93
Promo Pack
Six
PMH3 · 169p
TCGplayer market
US$5.04