User blog comment:YourPrivateNightmare/Ewwwww, it's got the nerfs!/@comment-7967732-20140513110407

All depends on the changes. Most won't kill the champion (Elise is still OK-ish), but some actually did (Urgot is still dead after nearly 2 years since his last nerf). Some changes are mistakenly thought as nerfs, while in fact they might be buffs.

Kha'Zix was not nerfed. It's a damage nerf together with a tankiness buff. Consider that he got too high burst back then, the changes are buffs. Now he can build loads of damage items without worrying about being blown up in a split second.

Kass was total shit right after rework. Yes, TOTAL SHIT. It took HUGE BUFFS to bring him back (mana buff, damage buff, shield buff, move speed buff). Have you ever seen any champ that got 4 buffs in one patch? He was in fact OP again in 4.6.