Maester of Winterfell

{2}{w},{t}: Put a colorless artifact Book token with
"{3}, Sacrifice this artifact: Draw a card." onto
the battlefield under your control.
"There are some who call my order the knights of
the mind. You are a surpassing clever boy when
you work at it, Bran. Have you ever thought
that you might wear a maester's chain? There is
no limit to what you might learn."
—Maester Luwin