Don't you hate the parties with no healers? It wasn't my first time fighting Edda but I had forgot about the mechanics of the fight and the other party members didn't know them.
By the time I figured them out, they were dead. Boss had at least 50% left on HP. I was very low on HP too and on the verge of dying.
And if we all died, it was "duty failed", 30 minutes wasted, all the rewards we gained on this run are lost and we have to start all over. So I used my abilities to self-heal myself and save the day. I really wanted that Kinna axe.