Siphon Heart

On use, grants 10% of base damage dealt as Lifesteal for 15 seconds.
Obtain by defeating Tal'Ratha, then giving the Shining Essence Echo to The Custodian on N'Erud.
Lore
Life for life—that is the idea behind this technology. Apparently, when one lives as long as the Drzyr, exchanging a few years of one's lifespan here and there is no big deal.
"The average lifespan of a Drzyr is several hundred years. By contrast, I have survived for ages, siphoning life from space and time through consumption of the ambit ember.
I often wonder if the Seekers knew we could extend our lives in this manner and hid it from us for reasons of their own. I myself see no disadvantages to the process."