Anet, can you please update this rune? I tried putting it in a Rev build, and quickly found out that passive heals do not create a barrier based on "20% of heals received."
In my case, Steadfast Rejuvenation did not create a barrier. Vengeful Hammers did, but that heals for a lot less than Steadfast so there were much smaller barriers. Other heals like Healing Signet and Soothing Mists do not work. I removed the runes before trying Battle Scars, not sure if that heals as its a trait too.
I'm hoping this rune can be corrected to generate a barrier from any heal received, as implied by the 6th buff on the rune. This rune is really interesting, and I really like the idea of barriers being generated based on heals. Especially from passive heals, as it gives you a consistent force field of protection. :D For the build I tried, having 5 seconds of bonus hp after using a heal skill was certainly not worth the loss of utility compared to other runes. I'd love to use this rune, and hope it gets reviewed!