is this a common occurrence?

[skillmatic320]

And that frontal attack from the brayflox dragon badly hurts. It does something like 80% of your HP. If they are going to stand in it repeatedly, they are clearly wrong to place the blame on anyone else.

That's what i tried telling him, but he wasn't having any of it. I healed him back to full after he was hit by 4 or 5 of them, but eventually i just didn't have the mana to keep up with it. I even used aetherflow a couple times and an ether to try and keep up with how fast it was being drained.