Nexus Clash

Wiki says:

If a hostile character destroys a Stronghold ward or Glyph of Protection vs Good, Imp casts Glyph of Pain vs Good if none exists (10 MP).

but this is not happening

This is not my WM, it's a friend who told me to post here because he's too lazy.

Looks like use of these abilities was tied to the summoner having the Impish Mischief skill, not the status of imps as Mischievous. Since Mischievous Imps were added as a Desecration result a month earlier, this would lead to Mischievous Imps existing who nevertheless lacked the abilities.

This'll be fixed in the next patch.