Gyruda, Doom of Depths

Companion —Your starting deck contains only
cards with even mana values. (If this card is your
chosen companion, you may put it into your hand
from outside the game for {3} as a sorcery.)
Flash
When Gyruda enters the battlefield, each player
mills four cards. You may cast a card with an even
mana value from among the milled cards without paying its mana cost.