I would be interested in hearing some feedback about actions for spell effects... In the case of cause earthquake, for example, the spell can result in a -2 penalty to AC, and the simplest form of that effect action would be:
AC: -2
My personal preference is to attach the spell name to the effect because combat can get confusing when spells start flying. So, that would look like this:
Cause Earthquake; AC: -2
But of course, spell effects are typically much more complicated than that in DCC, so some additional notation can be helpful. This effect gives a much more complete idea of the effect:
Cause Earthquake; AC: -2; NOTE: No attacks or spell casting possible
Currently, I am setting up spell parsing to create effect actions like the last example, which is still a fairly simple effect. If people have opinions otherwise, I am happy to go with a simpler form and let the players flesh things out according to their own preferences.