Healers on Cannith are generally pretty good I've found. I can usually assume that they know the basics of their class, even if they don't know the specific quest. I am happy to help people learn, too-whether it is specific quests or something more general regarding curse removal/healscrolls/enhancements/feats/etcetc. Well, found the worst healer I've ever seen today in TOD.
Really all you need to keep most tanks up are:
1. Heal spell
2. Heal scrolls
3. Aura if clr/capstone if fvs
He used exactly none of those:
-Didn't even carry mass heal spell (implosion, energy drain and...drum roll...summon monster IX.
-when asked to heal the horoth tank spammed mass cures till was out of spell points (took under a minute, probably plays a mean sorc). Did not use the heal spell on the tank even once.
-did not carry heal scrolls. Was flabbergasted when I asked him if he had heal scrolls.
-despite spamming spells, could not keep the tank up.
Sad part was, afterwards he offered to link "20 war trophies". How this guy made it through that made TODs healing like that I have no idea.