User blog comment:Bashfrog/Sion Invisibility Syndrome/@comment-5556439-20130729085841/@comment-1985493-20130730040838

To understand the reason why a lifesteal tank sounds like a bad idea, think about why people hate Hecarim: he can get super duper tanky, has tons of damage, AND has an ability that gives him mad healing! It's a really frustrating combo, but one that you generally don't see unless you lack all understanding of how to deal with him. I doubt Riot will turn Sion into something like that, though :P I'm positive they're cooking up something better than that.