Assume it's not nerfed for the moment, unless live PTR shows a change (which I expect it won't). The 13% reduction leads me to believe the spelldata is simply being normalized to show a hypothetical ilvl 463 version of the proc, like with most trinkets.

e: Confirmed, nothing changed. Sick of Blizz Lies about hearing feedback - Forums - World of Warcraft

Just adding on, with Spirit Walker's Grace Tranquility can be channeled while moving during transition phase.

Comments about Bathed in Light the 600% Healing Buff during the Day phase of the Tsulong encounter in Terrace of Endless Springs.

Tranquility channel will update when the caster receives the buff so if in mid channel, the remaining pulses will be boosted.
HoTs cast with the buff up will maintain the buff until the HoT expires or is refreshed less the buff. (Let lifebloom continue running empowered)
Swiftmend ground effect updates continuously and will power down when the caster's buff falls off.
Refreshing an existing Lifebloom stack on the boss with RG while empowered will empower the stack.

Do note, along the lines of Guardian Spirit to empower your heals as well the monk 2min CD Life Cocoon also empowers your HoTs as well.

Wind Lord Mel'jarak iceblock will prevent Amber Prison from being applied.

Imperial Vizier (N + H), Iceblock works for Attenuation / Force and Verve. Deterrence does not.

I can't speak for the symbiosis version of the spell but Deterrence on my hunter alt did block 100% of the incoming damage from Force and Verve, did not use it during attenuation though since walking and shooting is better as a hunter^^

Quick question, why wouldn't you Detterence for Total Annihalation on Elagon?

Also I think it's worth noting that you can symbiosis monks for their shieldwall (20% dmg reduction, 20% hp increase, 3 min cd) just as an additional defensive cooldown. Obviously we have barkskin, but there's enough dmg flying around in heroics to make use of additional cds. I don't believe we should waste symbiosis on avoidable mechanics.

As I understand, DPS DKs and Wild Mushroom: Plague is the only DPS increase in a Patchwerk fight, which is a plenty acceptable general use considering that Icebound Fortitude is so helpful. I'm not familiar enough with tank mechanics to swear to it but at first glance even the 5.1 tank mechanics suggest symbiosising a DK, since the ability they receive runs on Runic Power and does not directly compete with Active Mitigation for resources.

I just wanted to add my two cents to using IBF + BS or IB on Elegon.

I soaked for our first kill last night, and we ran into problems with me repeatedly dying anytime I took any significant damage the few seconds before the explosion - I just didn't have the life, even with the cooldowns, to survive the explosion if I wasn't pretty much full health going into it (the hits were about 350k with the cooldowns). It could have been the way Elegon's abilities lined up in conjunction with the add I was soaking that caused me to frequently get hit with additional damage a few seconds before it exploded, as our other Druid did not have near the problems that I did. However, I found soaking to be an exercise in frustration.

While i think it is nifty to find creative ways to use symbiosis, it would be my suggestion that if you have people available with larger damage reductions that can sustain damage regardless of taking a fair size hit in close proximity to the explosion that you have them soak instead (if yo want healers to do it, monks pretty much laugh in the face of the ability, and I think can even avoid the stun). If you don't have that luxury for whatever reason, be sure that your other healers know that you need to be full health going in, so that they can step off the platform to help get you topped up quickly if needed.

There should be no reason for a druid healer to soak on Elegon heroic. If you have monks, rogues (feint), warriors (shield wall), mages (cauterize), warlocks (dark bargain) among others, they are far better equipped than us to deal with large single hits.

Mages can also use Alter Time to get out of the stun. In our group Warlock and Mage don't even need to be healed outside the shield. And our rogue takes little damage and can be healed quickly. I soak one, but I'm not healing on this fight, so I have moonkin damage reduction + BS + Warlock's Unending Resolve (symbiosis).
All in all I too consider resto druids to be very low priority soakers.