Talk:Riven/@comment-7434112-20140118152608/@comment-9008617-20140119221536

It's a buff.

Making use of just 2 shields alone (20 hp/shield) already gives 40 effective health.

And since it has a 10 sec CD this allows for 6 shields per minute (*correction to my earlier post) and since there's no mana cost, there's nothing stopping you from spamming it in lane to absorb them damages. Derp.