Talk:Vladimir/@comment-24795478-20160513201746/@comment-26001789-20160520001231

It's because the mechanic that Riot intends to give Vlad's E is to "Pay as much Health as your body can sustain for more damage".

I'm sure you can try out a Current HP that has a generic "Bonus HP" scaling, but Riot wants Vlad to use his own health as a resource to fight besides not taking too much damage.