User blog comment:Alien Paranoid/Volibear: Champion rework/@comment-5035765-20161105044848/@comment-26902312-20161110163343

If there would be a problem with his passive, it could be reduced to .. below 20% max. HP against monsters.

Decaying AS has been removed, as you said others have mentioned the problem with coding and I didn't think about it in the first place.