Dead Bone made a brief foray onto the wilderness, rapidly forming an undead troop composed of two beings from the Legendary Realm and dozens of Leader Level undead within just half a day.
It did not resurrect more undead.
A larger number would have been too conspicuous.
It could use the Wraith Sacred Mountain to accommodate these undead beings. However, the Wraith Sacred Mountain exists between reality and illusion, so it was feasible to briefly shelter a group of lives not native to the Wraith Sacred Mountain for a short time, but not for an extended period.
No more Legendary Realm monsters were encountered except for the first two.
Dead Bone wasn't overly regretful; it understood that the pressing matter was to find the next path for development—whether it was the Wraith Sacred Mountain or Necrotic Plague Breath, to unleash their real power, choices had to be made.