Everyone present was shocked by this sudden turn of events. Ivita finally understood why the Tide Witch and Sea Spirit Witch, who are Marquises, would serve under a wizard who is far beneath them, and why the Moonlight Great Witch said they were neither humans nor witches.
These two witches were, in fact, the avatars of the pagan Sea Goddess.
It seems that Marco Anson had once scattered her body, and in order to reconstitute herself, she had been secretly scheming and plotting this whole time.
Ivita thought for a moment and realized that she might have unintentionally helped this Sea Goddess. By exploring the missing territories, she had caused the death of the Great Governor, which probably made it easier for the Sea Goddess to resurrect herself.
So, the map that the Moonlight Great Witch gave her was likely not a secret to quickly advance to the fourth level, but the place where the Sea Goddess was to be resurrected.