User blog comment:Obyvvvatel/The 4 gold attributes of jungler champion./@comment-4893919-20130211174951/@comment-216.36.26.248-20130212033344

You mentioned his E does significant damage, but just as important is that it's true damage. Every champion who can summon true damage in significant quantities is a significant concern (Olaf and Darius come to mind--you'll almost always see complaints about one of the two in some form or another).