'''Basic Trope''': A weapon that doesn't look very good, but is actually quite powerful.
* '''Straight''': [[TheHero Hiro]] finds a rusty, chipped sword that's clearly seen better days. This sword turns out to be the [[CoolSword Dragonsbane]], which is [[RagnarokProofing still extremely effective]] against dragons.
* '''Exaggerated''': The rusty Dragonsbane looks like it's one bad swing away from snapping in half, but is actually the [[InfinityPlusOneSword strongest sword Hiro can ever hope to find]].
* '''Downplayed''': Dragonsbane hasn't aged well, and takes a second look to see past the patina of rust and the rotted hilt, but it's still recognizable.
* '''Justified''': The Dragonsbane was lost years ago, damaged by the same tragedy that befell its original wielder, and left to rust. However, the magical charms that gave it its power are as strong as ever.
* '''Inverted''': The Golden Blade of Hope is an incredibly ornate scimitar surrounded by [[FlamingSword yellow-white flames]]... But it's purely ceremonial, and totally impractical in a fight. Who thought it was a good idea to [[ElementalCrafting make a sword out of gold, anyway?]]
* '''Subverted''':
** Hiro finds an old, rusty sword and [[GenreSavvy thinks it might be useful]]... But when he tests it out, it breaks.
** Hiro is given an old, rusty sword that he is told is the great Dragonsbane, and though it may not look it, it's still as powerful as ever. After defeating the dragon with it, he's told that it was really just an old, rusty sword, and the [[MagicFeather power was in him all along.]]
** Hiro searches for Dragonsbane, a very old sword. It turns out that it was crafted in the bronze age. It has a little greenish oxidation on it, but it's still clearly in good condition.
* '''Double Subverted''':
** However, he eventually finds a blacksmith who's able to [[ReforgedBlade reforge the broken blade into a powerful weapon]].
** The prophecy [[ExactWords merely says]] that whoever ''holds'' Dragonsbane will drive away the dragons. It never says he has to ''use'' it, or even that it has to be [[WreckedWeapon intact]].
** It turns out that the old, rusty sword the mentor gave Hiro really was a magic sword.
* '''Parodied''': Hiro throws away the InfinityMinusOneSword for a rusty piece of junk, acting like it's the InfinityPlusOneSword even though [[MockGuffin it obviously isn't]].
* '''Zig Zagged''': Hiro finds the rusty sword in the first episode, and is convinced that it's the weapon destined to defeat the BigBad. He lugs it around for ages trying to find someone worthy of restoring it, while some characters call him crazy and point out other, more powerful-looking weapons, and others quietly suggest that it might simply be a MagicFeather. Even after it's [[WreckedWeapon broken in a fight]], he keeps DreamingOfThingsToCome and pressing on with his personal quest. Eventually it's restored and discovered to be an EmpathicWeapon that was [[SecretTestOfCharacter secretly testing his faith]], and on finding him worthy bestows its full power.
* '''Averted''':
** Hiro finds the rusty sword in the ruins but leaves it, because his [[WeaponOfChoice preferred weapon is a pistol.]]
** The sword is old and rusty, and no-one so much as suggests that it might be a hidden artifact of power.
** The magic of Dragonsbane keeps it from rusting. When Hiro finds it, it still looks fresh from the forge.
* '''Enforced''': The writers are going for AnAesop that you shouldn't judge a book by its cover, or that [[DentedIron age doesn't mean obsolescence]].
* '''Lampshaded''':
** "You'd think magic swords would come with [[RagnarokProofing anti-rust charms]] as standard..."
** "Great, we're all set to slay anything that hasn't had its tetanus shots."
* '''Invoked''':
** The sword is an EmpathicWeapon that disguises itself as a rusted piece of junk to attract a suitably HumbleHero to wield it.
** The sword was designed to look old and rusty to fool opponents into a false sense of security.
* '''Exploited''': An "{{Honest John|sDealership}}" manufacturer of cheap swords keeps them in salt water for a month so he can pitch them as being long-neglected {{Ancestral Weapon}}s going for a song.
* '''Defied''': "Even if this sword ''was'' great once, it'd be ruined by all this rust!"
* '''Discussed''': "Go for the rusty old sword. I bet it'll turn out to have awesome magical powers."
* '''Conversed''': "He has to pick the legendary Dragonsbane out of the FlamingSword hanging in mid-air, the [[BlingOfWar shining silver one]] on a plaque on the wall, or the rusty one sitting in the fireplace? Gee, I wonder..."
* '''Deconstructed''': Hiro recognizes the Dragonsbane and, aware of its fearsome reputation, cleans the worst of the rust off and carries it into battle. However, despite his best efforts to polish it up, the years of neglect have left it brittle and dull and a shadow of its legendary reputation.
* '''Reconstructed''': Hiro seeks out the UltimateBlacksmith, who's able to [[ReforgedBlade restore the blade]] to its former glory. Even if it's never quite what it was, the terror on his foes' faces as they [[FamedInStory recognize the ancestral weapon]] more than makes up for it.
* '''Played For Laughs''':
** Part of the reason the Dragonsbane is so effective is because every dragon that sees it bursts into uncontrollable laughter and can't concentrate on the battle.
** Hiro fights a dragon with the rusty old Dragonsbane. He barely manages to cut the dragon with it before it breaks, and he flees the battle. Months later, the Dragon dies of tetanus from being cut with a rusty old sword.
* '''Played For Drama''': The Dragonsbane is the only weapon that stands a chance of defeating the dragon god Marduk... But it's been lost for eons, and when finally rediscovered, is in such a state of disrepair that it's practically unrecognizable.
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%% Optional items, added after Conversed, at your discretion:
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%%* '''Implied''': ???
%%* '''Plotted A Good Waste''': ???