When you are a lock and have all of your healing based off how much damage you do. Then a 10% nerf to damage combined with a 10% nerf to healing is a 19% healing reduction.

Classy.

It's a little technical which abilities get hit and which do not. If your ability procs a heal on you, then that is affected (such as VE). If you are doing a straight out drain, like Death Coil, then it will not be affected.

It's just 10% (for now) so I don't think the effect on a lot of these secondary heals will be very noticeable to be honest. Really we were trying to hit the big healer-based heals like Penance, Flash / Holy Light, Lifebloom, etc.