Just tested, working for me.Binding Heal does not reduce the cooldown of HW:Serenity for me. Is this a bug or am I missing something really subtle? (It does reduce the cooldown of HW:Sanctify by 3 seconds, which is correct.)
The reason I was considering Binding Heal is for Scorpion trash in NL. I did a bunch of runs in NL+12 and NL+13 (did not try it higher) and it's a 50%/50% chance for me whether I can outheal the damage or fail at it. I do pop all cooldowns, including more uncommon stuff you would expect most people to forget about (troll racial haste buff, Desperate Prayer, Ancient Rejuvenation Potion, Healthstone, ...). But it's still really tough. Are there any tips for healing scorpions. I'm mostly pugging M+ and there's usually no CC for the second (non-scorpion) add. As far as I understand, previously ranged players could stack up behind a scorpion to avoid damage, but it no longer works that way?