User blog comment:TonywongWYK/Patch Ideas/@comment-5514182-20130825214115/@comment-7844375-20130826093658

I don't think you realise how powerful spellshield is. It can block almost every single spell so, if you use it well( karthus ult,blitz grab, fed nidalee Q ,Ashe ult etc...), some people even call it OP...