On 2) Well, for one, it will make a fine theme for meditation, of course :) Secondly, I'll likely use something like "misleading sensations" from above as a starting point and try to find a banishing formula that works as well for Earth as the DA versions for the other gates seem to do.

(Also, apologies, apparently there was a typo in my HTML, which led to everything after "Dolmen Arch" being italicized, which made everything less clear).