[Summoning Stone of Death Knight]: Undead Spell item. You can summon a Death Knight, which has a 50% chance of fighting for you for 2 hours, and another 50% chance of turning into a normal monster.
"Another scam thing? Although it was said that there is a 50% chance of fighting for master, if one is not a Necromancer, the chance of summoning a Death Knight monster will be higher than 90%! This system is such a scam! Normal players could barely kill the Death Knight. But it's a special job of the Tribe of Darkness. Once killed, the reward will be good." Lin Jie played with the stone in his hand, which was the [Summoning Stone of Death Knight] he got after opening the Gift Bags. It was squared in shape, with a dark black color, just like a beautiful black gem.
Undead Spell items were the favorite item of jobs of the Tribe of Darkness, such as the Necromancers. After they got the item, they could turn them into their own Undead creatures after a long time of refinement.