Ulthadar

Ulthadar can't leave Moonstone Hall.

30 feet. Creatures entering the aura or starting their turn in the aura must succeed at a DC 26 Will save or be Stupefied 1 for 1 minute. On a critical failure, the creature is also Stunned 3. As a reflection of Ulthadar's emotional state, this aura is active when Ulthadar is agitated or angry and is suppressed when he is calm.

Ulthadar can't move on to the afterlife until Moonstone Hall is restored to a position of prominence within Escadar and staffed with new priests.

When a ghost is destroyed, it re-forms after 2d4 days within the location it's bound to, fully healed. A ghost can be permanently destroyed only if someone determines the reason for its existence and sets right whatever prevents the spirit from resting.

A creature with void healing draws health from void energy rather than vitality energy. It is damaged by vitality damage and is not healed by vitality healing effects. It does not take void damage, and it is healed by void effects that heal undead.

Ulthadar attempts to drain a living creature's life force. He makes a ghostly hand Strike but deals no damage on a hit. Instead, the target is Drained 1 for 1 day and Ulthadar regains 4 healing Hit Points.