Nope, there is no way.
The targets allowed only changes which units you are able to cast it on.
You could trigger it though. Use some buffing spell of sorts, then add a spell book containing permanent immolation, then disable it. Then run a periodic trigger (or other method eg local unit) to see if the unit still has the buff, and if it doesn't then remove the spell book from the unit.
I'm on a page about incorrect corrections, and spent the better part of like two hours trying to get someone to understand that -5^2 = -25, not 25, and then that post had comments get reposted because that group is self sustaining, and that person was in turn trying to explain what I just explained to them. And I'm taking that as a victory
I will be AFK for a couple of days you guys hold down the fort while I am gone. I will be checking in on my phone but that will severly limit me. Be back saturday!
I just got to watch the video because even though I was there I was trying to work out tech problems with the chat since I was the social media guy so I was distracted but check it out guys the video is super fucking great!