The Great Dragon Egg.

 The Great Dragon Egg is a prehistoric egg that carries what appears to be a living dragon embryo inside, yet this incubated tiny dragon is the last of the Great Dragons of legend once told in Outworld. It is located within the Lava Shrine. It made its debut in Mortal Kombat: Deadly Alliance.

Blaze was enslaved by the same sect of royal sorcerers and was put under their cursed spell, forced to protect this egg, which supposedly contained the essence of the Dragon King himself.

In Reptile's Mortal Kombat: Deadly Alliance ending, the Dragon egg hatched firing a beam to the Saurian, changing him into the Dragon King.

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