Sauron, the Great Deceiver

This spell cannot be countered.
When this card enters the battlefield, you
may have it become a copy of target creature you control or target creature in your hand, library,
or graveyard, except it still has this ability.
His spirit arose out of the deep and passed as a shadow
and black wind over the sea, and he came back to
Middle-earth and Mordor that was his home.