After the Core of Light was destroyed by Kaos, the Eternal Sources were scattered throughout Skylands. It is up to the new Portal Master and their Skylanders to retrieve the Eternal Sources to rebuilding the Core of Light to repel The Darkness.
After the upper half of the Core of Light was torn apart and swallowed by the Sky Eater's rift in Skylanders: SuperChargers, the Core was rebuilt in the Sensei Light Realm. However, several of its components are missing, and the fate of several Sources is unknown.
List of Eternal Sources
Eternal Air Source
The Eternal Air Source was recovered by the Drow to the Stormy Stronghold, but attempts to harness the power of the Air Source went wrong, as it turned into a large twister that began blowing the Stronghold apart. It is the first Eternal Source obtained. Upon arriving at the stronghold, the Skylanders had to lower the lightning pylons to put the castle back together in order to retrieve the Eternal Air Source.
Eternal Water Source
After the Core of Light was destroyed, the Eternal Water Source returned to the sea in Leviathan Lagoon. The Skylanders needed to gather the idol statues around the Lagoon that were needed to make the Water Source reveal itself. However, before they could retrieve the Eternal Source, the Skylanders were swallowed by the Leviathan and ended up in its belly, where they would face Kaos, who used the Eternal Water Source to conjure frightening water spells and create his Water Minions.
Eternal Earth Source
A group of Mabu in Stonetown guarded the Eternal Earth Source until the Skylanders would arrive to collect it. However, the Eternal Source turned itself into a Stone Golem. It wrecked havoc upon the town's population until the Skylanders defeated it, turning the Eternal Earth Source back into its true form.
Eternal Life Source
The Eternal Life Source was hidden in a giant acorn in Falling Forest. Just before the Skylanders could retrieve it, Kaos arrived and fought them using his Life Minions and spells powered by the Eternal Life Source. After defeating the Life Minions, the Skylanders were able to retrieve the Eternal Life Source.
Eternal Tech Source
Eternal Undead Source
The Eternal Undead Source was located in the Creepy Citadel, where it was guarded by the forces of the Undead. When the Skylanders came close to retrieving it, Kaos appeared and summoned his Undead Minions to battle the Skylander while using the Eternal Undead Source to conjure spells.
Eternal Fire Source
The Eternal Fire Source was located in the Lava Lakes Railway, where Kaos used it against the Skylanders to summon Fire spells while summoning his Fire Minions.
Eternal Magic Source
- “Portal Master, you have retrieved the final element, the very essence of Skylands: the Eternal Magic Source!”
- —Master Eon
The Eternal Magic Source is the final main component of the Core of Light. According to the Weapon Master, the Eternal Magic Source was the original source of all creations. The Arkeyans uncovered its secrets, which they hid from the other races to prevent them becoming more powerful. The Eternal Magic Source was held in the Arkeyan Armory, until the Skylanders retrieved it.
- The skull in the Eternal Undead Source is the Skull Mask component of the Core of Light, which is a receptacle for the Source.
- Hex uses a similar mask for her Wow Pow, Skull Buddy.
- Air and Life are the only Eternal Sources in the Core of Light which do not require a corresponding component within the machine.
- The Eternal Earth Source is the only one to have a boss battle unrelated to Kaos, as it turned into the Stone Golem.