Transformed Librarian

Whenever a player searches their library, create
a colorless Book artifact token with "{2}, {t},
sacrifice this artifact: Learn."
Refusing to be changed back, the Librarian found that
opposable toes come in very handy when climbing up
the shelves and sorting books. Also, a very large and
strong orangutan has more plausible arguments when
talking about dog-ears and overrun return deadlines.