Baron Vyraz ordered Head Summoner Perex to summon Mortanis. Perex found this to be a preposterous idea due to the anima drought and messaged Vyraz back that he'd need to "scrounge up some anima if he wants his boneguard", which is apparently also what happened.
One of the most studied necromancers of the House of Rituals, Mortanis has been working tirelessly on a means of transforming himself into a more powerful form. Now, he is only a few moments from succeeding.
Spine Crawl — Summon a spine of bony spikes that deals Physical damage to enemies in a line in front of the caster.
Unholy Frenzy — Go into a frenzy, increasing Haste by 100%.
Screaming Skull — Attach a screaming skull to an enemy that will explode in 8 sec, dealing Shadow damage split evenly between all enemies near the target.
Bone Cleave — Cleaves all targets in front of the caster, dealing Physical damage split between them.
Unruly Remains — Summons some angry bones, which cause the ground to rupture in an ever-increasing radius of Shadow damage.
Lord of the Fallen — Summon all of the bones of the fallen, creating Unruly Remains around the battlefield and reducing the cooldown of Spine Crawl.
Summon Skeleton — While in the area surrounding Mortanis and his necromancers, skeletons will be summoned constantly against his foes.