Mae, Head librarian

{3}{t} Search your library for a Lesson card, reveal it, put it into your hand, then shuffle your library.
{2}{t}, Exert Mae, Head Librarian : you may shuffle any number of Lesson cards you own in graveyard and/or exil into your library. (An exerted creature won't untap during your next untap step.)
Books should be put in the library, otherwhile you won't be able to find them anymore.