I play a nightblade healer with a restoration staff. I got siphoning strikes not too long ago. Now when you toggle to activate it. You get magicka and stamina back with head hit from attacking with your weapon. You also get 15% chance to get more or something like that. (Sorry currently not on the game so I'm going off memory.) But it reduces spell damage by 24%. Now I'm not sure if that effects healing or not? Is anyone able to clarify this?