Valder is just a simple soldier in the army of Ethshar, on a simple scouting mission. When the enemy attacks in force, Valder is trapped behind enemy lines with a patrol chasing him. He then inadvertently stumbles upon an elderly hermit wizard, and the result is that the wizard's hut is destroyed by the enemy patrol.

The wizard, wanting nothing more to do with Valder, makes him a deal: he'll enchant Valder's sword, enabling Valder to return to his unit, and Valder promises to leave the wizard alone. The sword is enchanted...and what an enchantment it is. The sword is capable of killing anyone it's used against, and in fact Valder cannot be killed while he uses it.

Too bad there's a drawback...

''The Misenchanted Sword'', first of the ''Literature/TheLegendsOfEthshar'' fantasy novels by Creator/LawrenceWattEvans, details Valder's misadventures as he struggles to adapt his life around the power of his sword Wirikidor's enchantment...and the desires of those who want to take advantage of those powers.

!!This novel provides examples of:

* ActionSurvivor: Valder, not being particularly skilled as a soldier.
* AgeWithoutYouth: Part of Wirikidor's enchantment.
* AwfulTruth: It turns out that [[spoiler:Ethshar disintegrated into tiny squabbling feudal kingdoms long ago. The army had been carrying on the fight against the northerners for generations, with only the generals aware of what had happened.]]
* BrickJoke: The entire novel could be seen as the setup for one.
* ClingyMacGuffin: Wirikidor refuses to be separated from Valder in both the literal sense (when unsheathed it sticks to his body until he kills someone) and the metaphorical sense, manipulating people and events to be brought back to Valder if taken away.
* DealWithTheDevil: The northerners made several. Then the gods took notice.
* DistantFinale: Takes place 160 years after rest of the novel. [[spoiler:Valder is still running his inn.]]
* DrawSwordDrawBlood: The eponymous sword literally ''cannot'' be resheathed until it's used to kill someone.
* TheEmpire: The northerners, complete with TheEmperor.
* FantasticNuke: At one point a seer Valder talks to about getting Wirikidor disenchanted explains that, in the unlikely event that he found a wizard powerful and willing enough to even try it, the resulting magical backlash would kill everyone in a broad radius around the sword, with the ''best'' case scenario resulting in 33 fatalities.
* FishOutOfWater: Valder at first, adapting to peacetime life.
* ForeverWar: The Great War has lasted centuries by the start of the novel. Entire generations of soldiers have lived and died without ever setting foot in their nation's homeland.
* GiveChaseWithAngryNatives: The protagonist -- a soldier behind enemy lines -- takes a nap in a tree, and when he wakes up, there's a young dragon on the ground beneath him. He jumps on the dragon but is unable to kill him, so he runs away through the forest, the dragon chasing him, until he finds himself unwittingly on the edge of a large enemy encampment. He screams and runs through the camp -- and the sentries, soldiers, etc. who start chasing him have to turn around to deal with the dragon.
* IJustWantToBeNormal: Valder eventually becomes this, as his work as the army assassin eventually gets to him.
* ImmortalityInducer: The protagonist is a scout granted this by a magic sword. He believes he "cannot be defeated until he has killed 100 men", and puts his sword down and retires long before reaching that number. He doesn't find out the truth for... quite a long time. He cannot ''die'' until he has killed a hundred men.
** It's worse than that, as the sword has to be taken up by someone else next who will be compelled to kill him, leaving them with the requirement of having to kill 99 men (the enchantment of the blade specifically making it uninterested in women and non-humans), and so on as it loses one off the count each time.
* ImmortalityHurts: The sword grants its owner eternal life so long as they retain their ownership. However, this portion of the magic has two staggering flaws: First, [[AgeWithoutYouth it doesn't prevent the wielder from aging]], and will in fact [[WhoWantsToLiveForever prevent a natural death]]. Second, it will only prevent the wielder from dying; it is perfectly alright with letting them be maimed, blinded, or any number of other horrible things that happen when one wields a bloodthirsty sword.
* ImperfectRitual: The titular sword [[spoiler: was not made an EvilWeapon out of malice, but because the wizard was in a hurry and mistook a brass ring for gold.]]
* LoyalPhlebotinum: Wirikidor to Valder, although said loyalty has its limits. Most of the plot is centered around getting around these limits.
* MadeOfIndestructium: Wirikidor is virtually impossible to destroy or disenchant, which is good because doing so would kill Valder on the spot. Oh, and also [[FantasticNuke everyone else in a broad radius]].
* TheMagicGoesAway: According to General Gor, the gods shut themselves away after sealing away the demons and ending the Great War. While Gor makes it clear this doesn't mean all magic vanishes, he does say magic might not work the same - at least, the theurgy and demonology branches of magic, which deal with gods and demons, respectively.
* MyGrandsonMyself: [[spoiler:Valder, after gaining eternal youth, poses as his own nephew to ensure that the inn remains his. After that he continues to use this ploy: he owns two inns and every so often switches which one he runs himself, then later returns to the other claiming to be his own son.]]
* NeverForgottenSkill: Averted. Valder was never any great shakes as a fighter to begin with, and after over a decade without practice the only reason he survives a fight with two thieves is due to Wirikidor's power, a solid bluff, and not being able to die of blood loss. By the time he hits his sixties, he's absolutely hopeless fighting by himself.
* OstentatiousSecret: After a theft attempt, Valder realizes that his identity as Valder of the Magic Sword is an OpenSecret. He decides the best way to discourage more thefts is by openly displaying Wirikidor, explaining to anyone who asks that yes, it ''is'' a magical sword, but only ''he'' can unsheath it (offering a hefty cash prize if someone tries and succeeds) and that someone ''must'' die every time he's forced to do so. This works quite well. (He leaves out the part about immortality, though.)
* OurDemonsAreDifferent: The ''shatra'', who are technically half-demons, are considered nigh-unkillable by almost everyone. Of course, almost everyone does not have Wirikidor. There are also full demons, but they never show up directly in this novel (some of them do turn up in other Ethshar stories, though).
* OurGodsAreDifferent: Apparently they are all {{Actual Pacifist}}s. They break their oath once, to seal the demons and kill those who summoned them.
* ProfessionalKiller: Valder ends up being forced into this.
* ReallySevenHundredYearsOld: The 288 year-old [[spoiler:Iridith]], who looks to Valder to be about 25.
* RefusalOfTheCall: Valder has ''absolutely'' no interest in adventure whatsoever and would happily stay an innkeeper for the rest of life. Unfortunately, one of his army colleagues recognized him and spread the word, so adventurers keep turning up trying to recruit "Valder of the Magic Sword", only to end up sadly disappointed.
* ReluctantWarrior: Valder joined the army out of a sense of loyalty to Ethshar, and chose to become a scout so that he could keep his fighting and killing to a minimum. Being forced by his superiors to become an assassin made him absolutely miserable, and he was more than happy to hang up his sword when the Great War was over.
* ScrewTheRulesTheyBrokeThemFirst: When the Northern Empire violates the customs of war by summoning an all-out demon attack, the gods break their own rule of non-intervention to remove the demons and wipe out the empire that summoned them.
* SituationalSword: The sword will do your fighting for you, but only against adult male humans, and once it kills, you have to sheath it and draw it again to re-activate its power. Also, you can't resheath it, or even let go of it, until it's killed someone.
* WhoWantsToLiveForever: Subverted. Certainly not [[spoiler:Valder]], but the alternative is worse.
* YouAreBetterThanYouThinkYouAre: [[spoiler:When Valder questions whether he'd be considered worthy of eternal youth and immortality, Irideth points out that leaving a dangerous weapon like Wirikidor in the hands of someone who refuses to use it--who in fact refuses to let its presence impact his life any more than he has to--could save potentially thousands of lives.]]
* YourDaysAreNumbered: Valder learns that Wirikidor will turn on him after he kills roughly 100 people. By the time he's finished as an assassin, he [[OhCrap realizes]] that he's hit 80. Fortunately the War ends soon after.