Nur Abath, Crest of Xol

Nur Aboth, Crest of Xol is a unique Ultra Ogre that appears as one of the weekly-rotating final bosses of Escalation Protocol.

Gameplay
Nur Abath will behave like a typical Ogre in combat, using a highly-damaging stream of Void eye blasts from a distance and slamming the ground during close combat, and will occasionally summon lesser Hive units as well as Shriekers to aid him. However, he will by surrounded by a transparent aura, which will grant him an immunity shield whenever another Hive unit walks into it. To remove this shield, all the Hive that are within the aura must be killed and other reinforcements need to be kept out.