Labyrinth to a Library Pyramid

Labyrinth to a Library Pyramid comes into play
tapped.
{t}: Add {w}, {u}, and {b}.
"Fervor is no yet to my brother's stores of scrolls,
your own wit it. Even today, those who can solve the
riddles of his labyrinth can drink of the deep lore
contained therein." Hazoret, the God Survivior.