Muse of Creation

When Muse of Creation enters the battlefield,
create a Legendary artifact token called Muse's
Sketchbook with "{x}{b}{w}, {t}: Exile target
instant or sorcery. Target creature gains
"{w}{b}, {t}: Cast the exiled spell without
paying its mana cost with "Exile this spell
after its effects resolve." Timing restrictions
do apply to spells cast this way." X equals the
spell's converted mana converted mana cost."