Sorcerer of the Tides

When Sorcerer of the Tides enters the battlefield
you may cast an instant or sorcery with converted
mana cost equal to or less than Sorcerer of the
Tides' power from your graveyard without paying
its mana cost. If that card would be put into your graveyard this turn, exile it instead.
Eternalize {5}{u}{r} ({5}{u}{r} Exile this card from
your graveyard: Create a token that's a copy of it,
except it's a 4/4 black Zombie Human Wizard with
no mana cost. Eternalize only as a sorcery.)