Path of the Crow

Birds you control get +1/+1.
Sacrifice X Birds: Search your library for a
Cleric, Druid, Shaman, or Wizard creature with
casting cost X and put it into play.
{1}{b}{b},{t}: Create a 1/1 black Crow token with
"Flying, has the Bird type".
"He gives guidance though the darkened thickets."