Mazi, The Blue Queen

Mazi, The Blue Queen cannot be countered.
When Mazi, The Blue Queen enters the
battlefield you may reveal the top seven cards
of your deck. Choose up to three non-creature
spells and place them onto the battlefield face
down as 0/4 colorless book tokens.
{1} Sacrifice a book token, You may cast it.
{1}{u}{u} Sacrifice a book token, you may cast it.
Copy it and choose new targets.