Song of the Telepath

This spell costs {2} less to cast if you control a blue planeswalker.
Search your library for an instant card and reveal it. If that card's converted mana cost is 3 or less, you may cast it without paying its mana cost. Otherwise, put it in your hand. Shuffle your library.
Magic is like a song. To telepaths, the song is harmonized by a multitude of voices.