Obosh, the Preypiercer

Legendary Creature — Hellion Horror{3}{B/R}{B/R}3/5

Companion — Your starting deck contains only cards with odd mana values and land cards. (If this card is your chosen companion, you may put it into your hand from outside the game for {3} as a sorcery.) If a source you control with an odd mana value would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Colour identity Rakdos · Companion, Double · Commander page

In short

Obosh, the Preypiercer has 7 listed printings; the most valuable is the Halo Foil printing from MUL at US$16.81 on TCGplayer's market price. Prices below are the cheapest in-stock listing in the United States.