Tayanna, Bookweaver

{3}{t}: Create an artifact equipment token named Spellbook with "Imprint - when this artifact
enters the battlefield exile an instant or sorcery
from your hand." and "Equipped creature gains {x}{t}: Cast a copy of imprinted instant or sorcery.
X is equal to the spell's converted mana cost."
and equip {2}.
Tayanna is responsible for making all the books and
copies for the entire library.