| Bone Prison|
Bone Spear, Bone Spikes and Bone Spirit have a 30% chance to trap enemies in a Bone Prison for 3 seconds.
Bone Prison is a Necromancer passive skill, unlocked at level 16. It is a rework (and much weaker variant) of the classic skill of the same name.
Enemies count as Immobilized for the duration, but can continue to attack.