I know Daeris rain of sorrow can be devastating, especially to the male.. I've seen countless times that an entire team got taken out by one rain-of-sorrow. No surprise there..
However, there are times that the Rain doesn't seems to damage anyone.. And sometimes I could see that the rain-of-sorrow seems to damage for half a second and then heal the enemies?? What's going on ? I cannot really pinpoint the exact heroes that doesn't get damaged, but it seems to happen to dark heroes such as shade or undead...