Arc 4 - Age of the Two Devisers

The fourth arc starts with a mysterious new building appearing in Frostvale, at the location where the old enchanting shop used to be. This structure was later nicknamed the "Battery" by some citizens of the village.

Not long after this event, heavy waves of magical energy begun to hit the city. After a brief moment of confusion and mass panic, the source of these energy waves was tracked down to a remote location in a nearby jungle. The first Original Core Location had been discovered.

Two Devisers
Hooo boi there are two Devisers now. Old ones apparently an evil clone, new one had their soul trapped away using the four core thingys and was released when they touched them. Giving the cores to the new one gave pieces of his soul back to him.

The Curse of Shadow
Removing the dark core brought with it this shadow entity, which cursed the town for a bit before being defeated.

Lab Heist 1 - Everything Goes Wrong
They went to the devisers lab, fucked shit up but got the books they were looking for. These books gave them info on how to disable the big machine in the middle of town and on how to construct the cores. It seems they need to get a few crystals, plonk them into an infusion fabricator with a nether star and loads of power, then dump some iron plates and iron rods on them.

Lab Heist 2 - Less Things Go Wrong
The Other Deviser attacked the village, stole a book, went back to his lab, they went after him and took the book back. This time they managed to circumvent the labs security measures.

Harnessing the Power of the Power Stone
They figured out they needed a lot of power to contruct the cores, and decided to go find the power stone and harness it to power their machine. This machine got constructed over at the fusion fabricator, at the leviathan citadel.

Disaster
So the whole fuckin thing blew up.

Imprisonment
They managed to find a new fusion reactor and construct the stable cores. They then created a fake lab, tricked the Other Deviser to go there, and then activated the ritual to imprison him. It worked?