[Taqwus]

Displacement:
I don't think there actually IS a displacement effect other than the high def bonus granted by that chain mail instead of the usual defense penalties inflicted by armor of nontrivial weight.


Glamour:
It combines an automatically-cast mirror image with a super-stealth ability when inside the owner's dominion.

Mirror Image:
Number of images when explicitly cast can exceed the number of images granted by Glamour if the mage is strong in Air, I believe. Attacks that attempt to hit a person will have a chance of hitting an image (presumably more likely the more images there are -- could be that all targets fake and real are equiprobable), but all images are dispelled when an actual hit is scored. I haven't checked it, but it would not surprise me if an area attack was guaranteed to hit all images and the real one too.
This can be pretty powerful combined with high def and an air shield -- try the Vans or the Jonins from the Ashikaga mod, both of which have glamour and thus autocast mirror image.

I don't know if Mirror Image stacks with Glamour -- whether it adds images basically.


Mistform -- slightly different than Ethereal in that it minimizes damage taken (to one point per hit while in effect!) instead of enemy hit probability with mundane weapons. This can be rather potent; fighting a Mistformed SC without magic is not going to work very well, whereas even mundanes can hit ethereals 25% of the time at full damage. OTOH, you can't dispel etherealness with even the strongest of hits or with a hit from a magic weapon.