User blog comment:ClariS/My Champion Remake: Kayle/@comment-4636093-20120406091753/@comment-4881935-20120406125228

I will admit that it wouldn't be the same 'clutch save' feeling, as u stated as u can't save someone who's at 5 health left, but there are still other situations this will work fine, as long as they have a decent amount of health.

Besides, unlike the heal, this also improves the usefulness if someone engages a fight. Cast this on someone before the engagement and watch how much less damage they take thanks to you.

Last Whisper and Void Staff does make armor and magic resist less effective, but in truth, how many champions on the opponent side actually get those items? I would say only 2 at average.