Talk:Yorick/@comment-173.178.153.184-20111028145617/@comment-93.138.2.81-20111028211411

It's 40% of the initial damage dealt + 100% of the damage dealt by the ghoul's autoattacks. Since ghouls get 35% of Yorick's AD, this basically means that as soon as he pops Omen of Famine he has 35% life steal.