Warding Gaze: Anything the Glyphapillar stares at, if it has a mind, cannot approach closer than 5'. This is theoretically close enough to be struck with a longsword or larger. However, with each Glyphapillar present, this range increases by 5'.
They appear in colonies of d100. (I came to this conclusion after noting that
Eriogaster lanestris, appeared in colonies of several hundred. Glyphapillars are maybe bigger and certainly magical, so I scaled it down a bit)
A certain combination of scents, grants an individual the ability to move freely amidst the Glyphapillar's collective gaze. This may be derived from the 'Black Bark', that is, a genus of tree enjoyed by the Glyphapiullar. This is however...uncertain.
Ashkott Glyphapillar: Burning a Glyphapillar, transforms it into a Vitellary.
Warding Gaze: As above, only note that a sngle Glyphapillar may look upon a target as part of their move but, must then take an action to change targets. A single Glyphapillar has a Passive Perception of 12. This increases by 1 for each Glyphapillar present, to a maximum DC of 30.
All else as above.