Crystal of the Magic Kingdom

The Crystal of the Magic Kingdom is a magical artifact that appears in the attraction Sorcerers of the Magic Kingdom. It is designed to trap any evil forces that disturb the Magic Kingdom.

Description
The Crystal of the Magic Kingdom resembles a snowglobe, and is one of the most powerful items in the Disney universe. Its power is able (and meant to) to keep all thing evil out of the Magic Kingdom park all on its own. When its broken the crystal itself become crystal shards, which are still able to have enough power to destroy any evil within.

Role in Sorcerers of the Magic Kingdom
Hades, who's bored of the nothingness he has in the Underworld was looking for a new summer getaway spot and began to set his eyes on the Magic Kingdom. He planned on turning the park into a post-apocalyptic wasteland where he will rule. However, Hades began to recall the Crystal of the Magic Kingdom's power to keep all things evil out of the park. The crystal was in the hands of Merlin the Wizard, a powerful wizard who resides in a cottage in the middle of the forest. Hades sends his minions Pain and Panic to steal the crystal, but in a scuffle with Merlin, the crystal is accidentally broken into pieces, with only four getting scattered across the park.

Hades infuriated by his minions incompetence then decides to recruit some villain allies to help find the crystal pieces, while Merlin recruits the park guests as sorcerers. A race begins to find the crystal and in during which, Hades and the park guests meet and interact with various Disney heroes and villains. Hades makes deals with the villains and bargains them to help him find the missing crystal pieces and in return will get what they want. (e.g.Cruella, all the Dalmatian puppies in her possession; Yzma empress of Adventureland; Scar immortality.) However, some villains like Ursula, and Maleficent secretly plot to double cross him and plan to use the crystal shards they find to rule the park for themselves, instead of giving them to Hades.

Eventually, the crystal would be restored, but one piece is stolen by Pain and Panic, and taken to the Underworld. Merlin and the park guests travel to the realm and battles Hades and some of the villains.

The guests are able to defeat them and Merlin traps them in the crystal. With the villains defeated, and the crystal safe, peace is restored once again, and the guests become honorary sorcerers.