User blog comment:RoznosicielCiast/OP stuff not that good as considered by everyone? Balance, countering, sticking to meta without thinking, Riot's fails/@comment-8506165-20130811023749/@comment-4593717-20130811025016

Guillotine happened because (something like) "Darius should not have his ultimate available every time his opponent re-enters lane."

If it was truly because of kill stealing like Roz says, then the new version wouldn't be allowed to be used temporarily after getting a kill.