Well, and the multitarget fireball. Also note, none of them have the same save, including the silent image investigation and levitation's attack function. I think that is more the point - save appropriateness can really impact those save or nothing spells quite a lot. You don't need to have an armada at your fingertips, but you shouldn't be loading up on all one save type unless you are pretty sure what you are fighting and it's hitting a weak save. It's as good as imposing disadvantage on saves in many cases
Also, I had not considered slow as seriously as I think I will now. Analyzing how our fights have gone recently, and how this would have impacted, I like this more. We've spent some time on Giants in SKT, and they are not particularly strong in wisdom, but dropping their attacks down to one would be an excellent boon. The save and the ac penalty is almost icing on the cake. If I do not hit everyone in the area, our GM tends to wake them up, making it really not that useful.
Also, I had not considered slow as seriously as I think I will now. Analyzing how our fights have gone recently, and how this would have impacted, I like this more. We've spent some time on Giants in SKT, and they are not particularly strong in wisdom, but dropping their attacks down to one would be an excellent boon. The save and the ac penalty is almost icing on the cake. If I do not hit everyone in the area, our GM tends to wake them up, making it really not that useful.