Good = healing? Why can't you be good by defending yourself?
Or attacking others. Heroes that slay dragons and kill armies are considered good, but if a wizard bumps someone on the head with his staff, he is evil?
NOPE.
Alignment is a wonderfully fluent thing. I like to play my wizards annoying, snarkish and utterly out of place. usually having a shiny array of attacks and ways to murder people, but the fact that they don't use the ways to murder people makes them at least a bit of an anti hero.
Likewise, a great villain should have some powers considered good, because who doesn't need the ability to heal the dragon you are sticking on cities?
Can I mix them? I could be a necromancer that used his powers to heal people.
Reminds me of that raise a dragon game. Where healing made zombies.
I think the only reason people consider necromancy such an evil sport, is because it involves giving new life to their dear, dead fellows. That would otherwise be lying around, rotting and doing nothing to solve the current issue. Sure enough, you could go about giving them a proper funeral and stuff, but only if you live through the things that just killed your dear, dead fellows.
That is, the monsters.
You know what could take down the monsters, or at least make an excellent distraction? Zombies.
Just saying.
Oh, and healing:
Oh, you are hurt? Yes, of course I will heal you. Here, please hold that piece of metal into the fire for a while. No, no, it has nothing to do with healing in anyway, just a bit of fun. You will see.
Let's see the instructions... Place hot burning metal in wound. Heal wound. See fellow run around in pain for a while, before they manage to rip out hot burning metal rod, thus reopening wound. Sounds ea- Hey, why are you leaving??