Quote Originally Posted by Iamyourking View Post
Aura of Menace is charisma based, the same as it always is, and they are shooting the actual feathers in the vein of the Stymphalian Birds.
There are only the Archons that have it, in core, and they list the Ability Score in the description of the ability every time, or they have an overarching description above their entry. Because you don't have that entry, it is impossible to reference. Also, having an Aura of Menace be made off of Intelligence or Wisdom makes sense as well, so you are just better off listing the ability score associated with it.

If you look through monster descriptions in the SRD, they all either have an overarching ability description that tells which Ability Score if there are multiple entries, or it says within the entry.