A summary of healer issues

[Remolia]

So the spell is useful because somebody else made a mistake and took avoidable damage in level 50 content, from 10 years ago.

Yes.

Obviously they had no defensives or self healing, or they just didn't know that those abilities existed. Fair enough.

Not my problem. But if some one got ded, and I was able to do something to avoid this (as a healer) - now this is my problem.