User blog comment:Asfidyll/Ryvar, the Nether's Guardian/@comment-9450377-20140410143447/@comment-10253076-20140410184810

Yup, it is a lot of health. But the leash range is actually quite small considering the fact that a lot can happen within 30 seconds. When it comes down to it, the 400 bonus health isn't really that much at all, as Ryvar has to constantly stay within his guarded ally's range for the bonus to be active.