In the Hills of Shade: Sees invis; enrages; summons; unrootable/unsnareable.
In Convorteum: This is a Telmiran mob found at two known locations: (-750, +1150, +825) and (-710, 1150, 825), both on the fourth level of the fortress. It summons and gravity fluxes for ~23,000 every 8 seconds. It sees invis and Shroud of Stealth.
In Argath: Spawns in the southern section of the "arms" level. Two known spawn locations: (-1045, -830, -265) and (-965, -1160, -267). For map
Locations for "argath.txt" map file (note for all Argath named map locs, see this quest entry):