About: http://webisa.webdatacommons.org/127882408

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	It would seem that if you have got high AS, that 3% max life magic damage would add up, especially if the opponent has been stacking armor against your physical attacks.
http://www.w3.org/ns/prov#wasQuotedFrom	leagueoflegends.com