Online game: Are all the skeletons I summoned children of the plane?

"Is this... the legendary holy object?"

Wang Yuan excitedly took the box from the mayor Hag.

The box was all black, and it was densely engraved with inscriptions.

Opening the box, it was a book with a black cover.

On the cover, a strange magic circle was outlined in gold.

𝟔𝟗Book Bar→96𝖘𝖍𝖚.𝖓𝖊𝖙

The magic circle seemed to be constantly rotating.

"It appeared!! The holy object left by the legendary hero Sag! The heroic history book!"

"So the holy object looks like this, this is the first time I have seen it."

"Me too, but I have seen illustrations in the history books of the Federal Library."

"Is this thing really as powerful as the legend says?"

"I don't know... I hope so. After all, we finally got him this book, and it can't be in vain."

Two skeleton soldiers whispered to each other while looking at the black book in Wang Yuan's hand.

At the same time, a prompt message flashed in front of Wang Yuan's eyes.

[System prompt: Do you want to claim the Hero History Book as your master? ]

"Yes!"

Wang Yuan clicked the button without hesitation.

[System prompt: The Hero History Book is successfully bound, and you get the Necromancer's holy relic "Hero History Book·Reincarnation\