Artoomis said:See also the massive damage rule wherein you must make a save (or die) if you take 50 points from one blow. You don't take 1, then another, then another until it adds up to 50, they happen all at once.
Sorry, but this one is history. Your character died - get over it. Learn from it.
Set you contigency either as:
"If I will be killed by the damage, heal me first" (I am not sure this would work), or set a higher threshold, but choosing the number is tricky. Too high, and you kind of wasted a heal, too low and you're dead.
I also think there is a higher level spell that is set up to keep you from dying, but I do not know what it is.
And if you read the thread, instead of skipping, you would realize i am talking in hypotheticals, that this is a discussion I am having with my DM.
Also, based on your assumption (what it is so far) your wording will not work.
"If I will be killed by the damage, heal me first". Ok, so prior to taking the damage you are healed. You still take the damage, and if that damage was enough to drop you to -10 you are dead.
Ignore massive damage rules for this argument, i am not questioning that rule.