For anyone else thinking of using changers to apply (transition:) macros to their revealed text, be aware: you can't do this with text in hidden hooks shown using the (show:) command. That is to say, this won't work:
You leap over the low wall and [roll]<link1| as you hit the ground.|attack)[ Drawing your blade as you roll, you come up with a darting slash to the knees]\ (click:?link1)[(show:?attack)+(transition:"dissolve")]
and neither will this:
You leap over the low wall and [roll]<link1| as you hit the ground.(transition:"dissolve")|attack)[ Drawing your blade as you roll, you come up with a darting slash to the knees]\ (click:?link1)[(show:?attack)]
You'll have to do this, which is back to the annoying nested macros:
You leap over the low wall and [roll]<link1| as you hit the ground.|attack)[(transition:"dissolve")[ Drawing your blade as you roll, you come up with a darting slash to the knees]]\ (click:?link1)[(show:?attack)]
So I prefer not using (show:) and sticking with displaying my new text directly within the hook of the (click:) macro wherever possible.