Who says you will even have access to the spell every game? If you do who says you will get it in turn 1 precisely? If you are adding in that spell for one turn of your choosing then I can easily add it to the second result also for an extra 3A. This is just not how theoryhammer works.
Also, as I have said before, arguing something is better if you get a spell off isn't avery solid way of making it out to be better, since you are admitting to needing an x-factor to equal to odds.