Bushou Akamine, the Red Peak

Creatures you control have Bushido X, where X is half the amount of mana spent to cast Bushou Akamine, rounded up.
Vigilance, intimidate
Whenever Bushou Akamine deals combat damage to a player, you may pay {b}{g}. If you do, you may cast target creature card in a graveyard with converted mana cost less than or equal to the amount of mana spent to cast him without paying its mana cost.