It is literally just 15% potency for heals only. Given potency levels are 70-100k.. it's not worth the AA at top level.
Thanks for your response Mermut. Anyone else disagree with this...i know some coercers still think it is a raid saving spell. I had been thinking it was really weak the last few expansions.
No, Mermut is correct. It only provides 15% potency, which amounts to about .5% of actual difference when stacked on top of the (relatively standard) 90-95 thousand potency that we're at right now. To be entirely honest, it would be very far beneath notice. I raid on a templar at the moment and I basically full heal with every tick of every heal, so the only thing that would benefit is wards. At that point, my wards would be doing MAYBE a million more, on top of the several hundred million or even billions that some classes can put out.
With the current bleedthrough mechanics, it doesn't even help wards. Most of the time, wards are either blown away so quickly that 15% doesn't matter, or they expire before they're used up.. despite the group constantly spiking down to yellow. Example: Solo healing on air EH expert on my mystic, less than 1/4 of my healing is wards (with umbral warding ALWAYS up)... so the 'average' bleedthrough in that zone is at least 75%...