Kurotsuchi, the morbid mind

{2}{g}: Give +1/+1 to target creature. Kurotsuchi gains undying until the end of turn.
{2}{p/b}: Sacrifice a creature. Draw a card for each different mana color in its cost.
{2}{u}{g}: Give haste, double strike, undying, or shadow to a creature on the battlefield.
{x}{u}{b}{g}: You may play one creature card from your graveyard, where X is it converted mana cost.
I hate perfection. Perfection is to be unable to improve any further