Hall of Heroes, underground floor.
The Realm of Heroic Spirits, which only Law Realm powerhouses could barely observe, lay beneath the main hall.
It existed between existence and nonexistence.
There were no heroic spirits within the Realm of Heroic Spirits. It seemed to be a medium that connected to the heroic spirits still remaining in the Eternal World and summoned and awakened them.
Mu Yuan thought.
He walked up to the enormous formation used to summon heroic spirits.
At the center of the formation stood a simple stone platform. Naturally, there was nothing on it. The prerequisite for a "designated summon" was placing an item closely associated with a certain heroic spirit on the stone platform.
Mu Yuan placed the simple, tattered Necronomicon on it.
This relic had a closer connection to a Saint Realm great powerhouse. At the same time, the Necronomicon's owner was very likely a Great Lord-level, or even a True King-level, existence!
Of course, he had to try this saintly relic first.
"Use!"
"Designated summon!"
"Ding!"
Radiance burst from the enormous formation. Invisible great power descended, enveloping the saintly relic and connecting to the entire Eternal World.
Mu Yuan involuntarily clenched his hand, his heart gradually rising into his throat.
Was this relic really owned by a saint? Had this saint truly wielded immense power? Or perhaps...
The next moment,
The radiance that had just burst forth dimmed, and the entire enormous formation fell silent again.
"Notice: Designated summoning of the legendary building Valhalla failed."
Prompt: The "designated summon" of the Legendary Building Hall of Heroes failed.
"Failed?"
Mu Yuan frowned.
The ancient relic, the Necronomicon, had also been appraised by Isroya. It could be confirmed that this relic was exceptionally ancient and had an extraordinary origin. It also carried a trace of the