C964 An Immortal Artifact or an Immortal Fetus

Meng Ran would never have thought that in his previous life, he had captured the True Dragon and Heavenly Phoenix, two great ancient races, just to complete the heaven defying Spell Formation that he had set up in Northern Nether Immortal Domain !

What kind of Spell Formation was it that required the refinement of a Fifth Stage Immortal Tribulation Dragon Monarch and several tens of thousands of