The Egg on Roger’s Ship is the Ancient Weapon Uranus

During their face off at the Edd War, Shiki the Golden Lion while pointing in the direction of Roger said “We’ll use that apocalyptic weapon you’ve found and my military might!” meaning he was proposing an alliance. But what was he pointing at? A lot of people acknowledge that he was pointing at the huge spotted egg that was on the Oro Jackson.

Now “apocalyptic weapon” could only reference to the ancient weapons the World Government is also looking for. And Roger already acquired it during that time, two years before he found Raftel and conquered the Grand Line.

Given that the three Ancient Weapons are Poseidon, Pluton and Uranus, is this egg Uranus? I believe so via process of elimination.

    While Pluton has yet to appear in the story, it has been referred to as an ancient ship capable of massive damage and destruction. While the exact whereabouts of Pluton remain unknown, the Alabasta Poneglyph contains information on its location.
    If Roger knew about the Pluton in Alabasta, then why didn’t Cobra mention Roger in the Tomb of the Kings?
    Why did Cobra not have a saddened/noticeable expression when he read that Roger was executed?
    Instead, he was more worried about the ‘terrible age’ that would begin.
    Furthermore, it’s been hinted many times that the Pluton in Alabasta will be found and awakened by a group with bad intentions (World Government? Blackbeard?).

    Princess Shirahoshi is the current form of Poseidon.
    It’s impossible for Roger to have found Poseidon – he was going to die from his disease soon and Poseidon would be born 11 years later after the Battle of Edd War; so Roger left this job to a pirate with his will (Luffy) who would be around when the Poseidon would.

This leaves Uranus.
Gol D. Roger used to transport on his ship a strange big egg. When Shiki asked Roger to form an alliance, Roger refused and, while Shiki was trying to attack him, a sudden storm arrived and destroyed all Shiki’s ships.

“Uranus” was the name of the greek god who was able to control the weather, maybe that storm was caused by the Ancestral Weapon which just wanted to protect its owner from a danger, although in that moment Uranus wasn’t born yet or anyway it was sleeping in its egg.

The God Valley

The manga introduced a new island, known as God Valley. Sengoku says it was wiped from the books of history. He also adds it was involved to the taboos of the world, meaning the Poneglyph and the Ancient Weapon. But we heard of that island before, it's the kingdom that Professor Clover talked about, which was wiped from history.

Professor Clover said the existence of the kingdom posed a threat to the world government, and while he wasn't sure why, they key to it was the name of the kingdom. The name is God Valley. This is because this island poses a threat to the living gods of the world, the Celestian Dragons. Someone normally would discover about the Poneglyph and the Ancient Weapon when they reach the island at end of the Log Pose. That island is God Valley. Rocks reached God Valley, and he decided to find the Ancient Weapons to become King of the World. It was after the God Valley Incident that Roger, Whitebeard and the others went on their own journeys. Shiki also said he and Roger would use the Ancient Weapon to rule the world. This is because he was a member of the Rocks Pirates, and is just following his former captain plan.

The Devastating Impact Of The Reverie

The secret weapon of the Marines might be Vegapunk’s recreation of one of the Ancient Weapons. A week has passed since the end of the recent Reverie. Two news leaves the world in awe, with the Shichibukai abolished and a story about Sabo which mentions a death of someone important and an attempted assisanation. Something has happened to Sabo but let’s be real, he ain’t dead. Many people speculated that he has been captured by Fujitora and/or Green Bull.

Garp reveals that something big has happened in Alabasta. When connecting these facts, it becomes possible, that king Cobra has been assasinated by CP-0 ( he might have known too much) and since both Cobra and Sabo were present at the Reverie and Sabo was (likely) captured, he would have been the perfect scapegoat to blame Cobra’s murder on. If Sabo is brought to Impel Down, this could be a way for Doflamingo to get out of there too. We know that Vegapunk has developed something powerful enough to replace the Shichibukai.

We will likely see this technology soon, as it would be make perfect sense for the Marines to use it against the now abolished Shichibukai. At the same time, Blackbeard orders his crew to set sail, stating they are setting out to claim something before the Marines do. It is implied in this chapter, that this might be the Mera Mera No Mi as Blackbeard has been shown to collect powerful devil fruits. It is also possible, that Blackbeard is looking for a Road Poneglyph. Another possibility is, that he is going to attempt to get his hands on an Ancient Weapon specifically Pluton wich is believed to be in Alabasta. The secret weapon of the Marines might still be with Vegapunk, so even though it is unlikely, it’s possible that Blackbeard is going to try to get his hands on that. Blackbeard might also be talking about the Shichibukai and try to recruit them to his crew.