Archmage High Arcana
 

Is there any way to add more options (through the editor) to the High Arcana custom class ability for the Archmage? High Arcana, even though they look like custom abilities, are described as "more complicated" and are not available to look at (or copy) in the editor. Is there a (preferably simple) workaround, or is it just too much hassle in the end?

It doesn't appear to be possible. I managed to get a test custom ability to appear in the selection menu by adding the tag "component.BaseArcana", but once selected, it doesn't appear in the Archmage tab.