Felon said:
Here's the situation: one medium-level, not-too-hard-to-come-by spell can bring the guy back in one minute. It won't be dramatic, it won't be imaginative, it won't be full of torment. The spell can be repeated under the same circumstances and produce the same outcome any given number of times. That's a basic law of the world you're writing about.
If the bodies are missing some critical or desirable parts, that "medium-level, not-too-hard-to-come-by spell" just isn't going to do the trick and you'll need a "higher level, harder-to-come-by spell", instead. Sure, another "medium-level, not-too-hard-to-come-by spell" can still bring the person back to life but they'll have to play race roulette to use it. Also note that neither of those "medium level, not-too-hard-to-come-by spells" don't work on death effects, nor do they work on creatures how have been turned into an undead creature. Both also require a part of the body and without any part of the body, you are beyond the reach of even the "higher level, harder-to-come-by spell" and into the realm of the highest level spells.
Is it really that difficult for an author to figure out how to mutilate a character's body, destroy a characters body, have the character transformed into an undead creature, die from a death effect, or even die from an artifact with an effect like the Skull in the Deck of Many Things in order to have a character die? Wouldn't bad guys go out of their way to destroy bodies (e.g., lava pits, vats of acid, etc.) knowing that it will make it that much harder to bring the character back to life?
Felon said:
All this hollow elitist posturing about "good" writing and "bad" writing does not address that simple conundrum. How do you, as an author, keep that basic law from draining the tension from a battle to the death when "to the death" doesnt' mean much? "Good writing" certainly isn't about making up the rules as you go along and turning a blind eye to established premises whenever they're inconvenient. That's not creative writing, that's just sloppy.
Well, the obvious answer is not to rely on the tension of a battle to the death to drive your story. Battle is a cheap way to create tension and in all to many books, movies, and especially television series, the outcome won't be death for the hero, anyway. Treat the characters more like superheroes and make the stakes more than simply the life or death of that particular character so that if they die, they will fail at something important and even if they are raised, the cost will be paid and will be steep.
Another option is to introduce a philosophical element to being raised such that not all characters will choose to accept it. All of these options can work within the rules rather than ignoring them.