Oh hay, there’s a change to the 4.3 patch notes. For priests. And both items pertain to Holy Priests:
Guardian Spirit’s healing bonus has been increased to 60%, up from 40%.
I felt like the BEST use of this spell is when a tank is plummeting to death, and you just hit it, wait for it to proc, THEN heal. Now, it seems more robust. I noticed that similar heal-enhancing abilities were not increased in this same patch (i.e. Vampiric Blood).
Holy Word: Serenity now has a cooldown of 10 seconds, down from 15 seconds.
10 sec cooldown is appropriate. This brings it in line with Penance (glyphed), disc’s main single-target heal-bomb. Suck it, bubbleslingers.