Bone Overlord
Walks through—
Can't pass
EnergyFirePoison
Damage taken
Neutral
100%100%100%100%100%100%100%100%100%
Location
Below Draconia, in the Forgotten Crypt, here.
General Properties
ClassificationUnknown.
Spawn TypeTriggered
RankBoss
IllusionableUnknown.
PushableUnknown.
PushesUnknown.
Cooldown20 hours
Max. Battle Length15 minutes
Bosstiary Properties
Category
Archfoe
ArchfoeImmunity Properties
ParalysableUnknown.
Sense InvisUnknown.
Behavioural Properties
Walks AroundUnknown.
Notes
Final boss of The Roost of the Graveborn Quest. While it can be a daily boosted boss or can be boosted via Bosstiary, it is not an actual creature, with its loot coming from killing the Bonelords's Phylactery. Its cooldown can be reset by using a 
Soul Trap.