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He loses his physical form obviously when Isildur cuts the ring off his body. Now at some point he becomes the 'necromancer' and he presumably either crates or “steals” a physical body given what Gollum says about him during his torture. But this hand that Gollum sees has “four fingers”.
When the island kingdom of Númenor sank to the bottom of the ocean during the Second Age, Sauron went down with it. Although he survived, it cost him the ability to assume his angelic disguise (sometimes known as “Annatar”) robbing the Dark Lord of his most effective weapon against Men and Elves.
The films imply he lacks material form, yet the books imply that he was actually in Mordor in a physical body during Frodo and Sam's trip to Mount Doom and the Battle of the Black Gate.
During his time on Númenor, Sauron had disguised himself in a handsome mortal form, but its sinking destroyed his body and permanently robbed him of the ability to shape-shift. His spirit fled back to Mordor, where he built a new body and regained his strength.
There have been 3 times in the record of Middle Earth that the evil Sauron has been defeated and cast out of his physical form. The first is during the fall of Numenor, when the kingdoms are turned to ruin, and the once noble race is almost wiped out, and loses control of the Palantir stones.
And some hold that this was not at first falsely done, but that Sauron in truth repented, if only out of fear,” as written in The Silmarillion. But Eönwë did not have the authority to forgive Sauron and said that Sauron needed to beg the Valar, and work long and hard to truly be redeemed.
Sauron's deepest fear was that Aragorn would use the Ring against him. With its powers of domination, Aragorn could comfortably take over the entirety of Sauron's dark army. Though this would eventually corrupt Aragorn, it would allow him to destroy Sauron and take his place.
Sauron's original name was Mairon. He was the mightiest Maia of the Vala Aulë the Smith, and learned much from Aulë in the ways of smithing and handiwork, becoming a great craftsman, and "mighty in the lore of" Aulë's people.
J. R. R. Tolkien described the Eye of Sauron in a metaphorical sense, as it was not an actual eye but rather a symbol of Sauron's influence over Middle Earth. Sauron was hunting for the Ring so that he could again take physical form, and the Great Eye was a way to show his relentless search for the Ring.
Because Sauron lost his Ring, his power severely diminished, and it took him thousands of years to rebuild his power. Even after Sauron declared himself again, his sole focus was on finding the Ring, not on solidifying his dominion.
Sauron does survive in some form after the destruction of the Ring. However, since he put so much of his own power into the Ring, he only exists as an evil spirit and cannot do anything. Instead of having control over all the people of Middle Earth, Sauron barely has control over his own fate.
Sauron put a lot of his own inherent power into the One Ring. And the Ring put some of its own power into the things it created. So when the Ring was destroyed, everything created by it was also destroyed. This includes Sauron's new body, the Black Gate, Barad-dûr, etc.
To add insult to injury, Sauron was never able to regrow that finger, and it served as a reminder of his loss for many years. At this point, he had lost his ability to shapeshift, so he couldn't just create a new finger for himself.
The usual description is something like "a dark Lord, great and terrible." It's short on specifics, save that Isildur described his hand as being black but burning like fire, and that in the Third Age he only had nine fingers.
Q: Why Was Post-Downfall Sauron Unable To Take A Fair Form Again? ANSWER: The short answer is that he was unable to focus his will sufficiently to control his self-incarnated form with such precision after his first death.
He wasn't truly omnipotent, but his great power allowed him knowledge of many things within the realm. Sauron insisted that the Orcs refer to him as the “Eye” because he did not allow his name to be written or spoken. So when the novels describe the “Eye,” it very well may be a description of Sauron himself.
Even if Galadriel had the One Ring, Sauron would destroy her instantly. Her plan, in desiring the Ring; was to use the One Ring in order to become the beloved queen over all men and Elves, and have them destroy Sauron.
Sauron was known to be one of the most powerful of his order, and although Gandalf (known as Olorin in those days) was of the same order he was a less powerful being than Sauron.
Tolkien also stated that Sauron saw Galadriel as his equal, and therefore, in his rise to power he feared that she would go after that power herself. As we saw in The Fellowship of the Ring, Galadriel told Frodo that the One Ring would consume her and turn her into a Dark Queen.
Both Morgoth and Sauron managed to inflict significant damage upon the world and their enemies before their downfall, but Morgoth was undoubtedly the more powerful of the two.
While Sauron is indeed one of the evilest entities in Middle-earth history, he wasn't always so, as The Rings of Power's premise states that "nothing is evil in the beginning." In fact, there were moments in the Second Age, after the fall of Morgoth, and even during the War of the Ring (depicted in The Lord of the ...
Sauron feared her
Among Tolkien's commentaries and notes, however, is the statement that Sauron himself saw her as his equal, and was consequently worried about what she might (and could) do if she so chose.
Galadriel Was Ashamed Sauron Tricked Her
This was the practical reason that Galadriel would keep Halbrand's secret to herself, but it's likely there was an element of pride as well. Before the events of The Rings of Power, she had spent centuries hunting down Sauron to the detriment of her reputation.
Sauron wants Galadriel to become his queen because she's useful, says Vickers. As he's already shown, Sauron can accomplish his objectives much more quickly when he has a highly regarded Elf warrior to get him into places like Numenor and Eregion (where Celebrimbor lives). “He feels a connection to her.