Obosh, the Preypiercer

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.)
Menace
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.