User blog comment:Captain Josh Samsorrow/Plot Ideas for Pirates 5/@comment-194.144.17.167-20110601143125

It's definitely Atlantis.

1. After Jack angers Blackbeard in his cabin, Blackbeard carves into the voodoo doll a symbol of a trident which appears on Jack cause the doll is connected to him.

2. Blackbeard's sword is called "Sword of Triton" and was made in Atlantis and has 1/3 jewels of Triton. Triton in greek mythology is son of Poseidon, god of the seas, and like his father, he wields a trident.

I think "The Sword of Triton" originally wielded all 3 jewels before Blackbeard somehow got his hands on it and I think that the power of all 3 jewels of Triton when replaced in the sword can unleash the power that is needed to get The Black Pearl to it's right size. And since Barbossa is the new master of the sword, he will return.