User blog comment:Care Level/Rivenous Hydra: Your Silver-Pubstomp Resource/@comment-24058976-20131122210011/@comment-9593635-20131122215318

True, but Riven also picks up Blade Weaving and Spell Weaving, and her execute naturally counters the idea of sticking around at low health. I haven't played top lane since s4, though, so all I can do is speculate. :)