"All of you, stop trying to kill the Dark Saint. If he was pushed too much, don't you think he might do something extreme? You still have your families and country to worry about, do you want to endanger their lives? Even if you don't care about your families, would the other mages of your countries think the same?"
The discussion has always been everyone against Howling Lightning. As such, he has no choice but to pull this card
This was one of the reasons why even if the majority of 7th rank mages hate a fellow mage at the same level, giving the said person a death sentence is still always impossible
Once the 7th rank mages are determined to kill a mage, that mage might pull everyone down with him
It was easy for them to erase all four countries of the earth. Pushing any of them to the extreme would just end in mutual damages
