This is my Boomstick

Some times, the patrol forces in the large cities of Zolarion need more firepower than crossbows provide, but don't have time to return to barracks to get a mage. Wands of fireball are expensive, and dangerous in the hands of the sometimes unreliable hands of Eastern Solaria's peacekeepers. Enter the boomstick! Depending on anticipated needs, a patrol may carry one or two of these portable artillery items -- enough to make a difference in a quick siege, but not so much firepower to alter the balance of power between the criminal syndicates and the law.

A 'Boomstick' is a single use wand. When pointed at a square and the command word ('Boom') is uttered, a fireball will erupt in that square, dealing 3d6 damage in a 10' radius. The wand will the disintegrate into dust, its magic spent.

The Singing Sword

It is well known that Alexander enjoyed singing while he explored, There is nothing he loved more than striding through the forests of the north, belting out a popular tavern song or a church hymn with equal vigor. What is less well known is that Kilmar, his frequent companion, was completely tone deaf. Alexander desired someone who could accompany him when they were traveling, so he created the Singing Sword.

The Singing Sword is a Longsword +1. When it is attuned to a character, that character can make the sword begin singing as a bonus action. While the sword is singing, the character has advantage on savings throws made against musical attacks and disadvantage on stealth rolls. She also gains +2 uses of bardic inspiration, if she is a bard.

Christine's Gem of Life Transference

It is said that there was an ancient ritual, time-consuming and difficult, that allowed a magic-user to transfer their life into an animal, and while their life was not in them, they could not be killed. The Empress Christine, impatient with the length and cost of the ritual, created this artifact to shorten the process.

This artifact is a small blue gem about the size of a plum. It allows the bearer to transfer their life to a vessel, either an animal or a specially made object. Inside, strange runes swirl around. When placed against the bearer's forehead, it takes one round to extract the life, after which there is a glowing ball in the middle of the gem, surrounded by the runes. If the owner then places the gem against the forehead of an animal or a specially made object, the runes form a tunnel, and the glowing ball appears to fall down the tunnel. The animal must be an ordinary animal and at least the size of a songbird.

If the bearer fails to transfer the life into a person or object within one minute, the glowing ball dissipates with no harm to the bearer. Once the life has been transferred, the bearer cannot be killed. Any attack which would reduce the bearer to zero hit points or less does zero damage, though other effects take place as if the bearer took damage, excepting any effect which would kill the bearer. If the vessel is killed, the life returns to the bearer, and the bearer may be killed normally.

It makes the bearer uncomfortable to be in the same room as the vessel, causing them to suffer disadvantage on all to hit rolls, skill checks, and saving throws.

The Sword of Law

Everyone knows about the Lords of Chaos, who foment madness in the wasteland east of the civilized nations. But few know of the Lords of Law, who dwell far across the sea to the west, for they do not meddle in the affairs of mortal men. Anymore. But long ago they sent a champion to fight chaos, and this was his sword, a sword perfect for that fight.

The Sword of Law does 5 damage, 8 damage if wielded two-handed. The wielder strikes as if they rolled an 11. If it hits a creature of pure chaos, that creature is destroyed if an 11 would fail its save vs. death. The sword is perfectly logical, and will not hesitate to explain why what you're doing is illogical.

Mace of Flowers

This mace +3 is an heirloom of the Torenscu family of Pechen. When swung, it leaves a shower of petals in its path. It does double damage to plants.

Ethereal Sword

During the enlightened ages of the rule of the Solarian Empire, there was an archmage named Egon. Egon loved to plunder tombs, but after a particularly painful encounter with a ghost aged his beloved Janine 20 years, Egon decided to create a sword that would be particularly effective against ghosts.

The ethereal sword appear to just be a hilt, as the blade exists entirely on the ethereal plane. It has no effect on creatures that lack a substantial presence on the ethereal plane, such as humans, humanoids, and most monsters. However, against creatures with a substantial connection to the ethereal plane, it functions as a sword +2. And against creatures that are fully ethereal, the sword deals double damage. As long as he wielded this sword, it was said that Egon was not afraid of any ghosts.

Pavlov's Bell

Pavlov's Bell was created as part of a now-lost psychic experiment. When rung, it will cause all canines in the area to salivate uncontrollably. 3 times per day, the Bell can cause a nearby canine to act as a Decanter of Endless Water. If the 'geyser' effect is used, canines smaller than man-sized with less than 1 HD are killed. Canines with 1 HD or more, or larger than man-sized, are knocked over if they fail a save vs. paralysis.

More magic swords!

Shamelessly stolen from Reynaldo Madrinan, with some edits.

Mockery of Honor - Lady Korinne Loras was a knight of Solaria, and in charge of an expedition to Morachi to retrieve the Fulcrum of Winter and sworn to bring it back to Solarium. When she defeated the mummified guardians of the Fulcrum, however, she turned on her companions, using the power of the Fulcrum to kill them all. She attempted to use the Fulcrum to replace Koschei as prince of winter. Koschei won that battle, but the Fulcrum was lost. Stained with the betrayal of a once great knight, this +2 broadsword affords its master a +2 bonus to all saving throws and immunity to all forms of fear and disease. It glimmers softly in the presence of evil and drips fresh gore when near someone truly good.

 Discordant Razor - This weapon's movements seem wild and erratic, no matter how skilled the wielder happens to be. Being struck by the sword further confuses the target, who must succeed a saving throw versus spell or have their next action altered negatively by the Razor's power. Victims of this ability will preform in the exact opposite manner of their intent. This sword is a chaotic vorpal sword often wielded by champions of chaos.

5 Intelligent Swords

In Arden Est, intelligent swords are created when their owner perishes and his or her soul, rather than passing on, inhabits the weapon they bear instead. Here are five such swords:

'Vajra', Sword +1, light 30' radius, INT 9, EGO 3, AL L, speaks through empathy.
Detects evil, invisible or hidden, and traps.
Vajra was owned by an enthusiastic, but none too bright, cleric of Fayon named Marcus. Marcus desperately wanted to be an adventurer, but his order, fearing for him in his foolishness, attempted to dissuade him. When he would not be dissuaded, they gave him a magic sword that shed light, hoping that it would light his way. Sadly, Marcus fell in with the Family, a mafioso type of thieves guild that Marcus thought was just a normal family business. While attempting to retrieve a golden falcon for them from a tomb, Marcus was killed by a pit trap.

'Almace', Sword +1, luck blade, 2 wishes, INT 9, EGO 5, AL L, speaks through empathy
Detects traps, metals, and invisible or hidden.
Chris was a halfling thief who often performed heists far beyond his ability. He attributed his success to skill, but in fact, he was always merely incredibly lucky. His luck ran out when the mound of rubies he was climbing turned out to be a red dragon, who incinerated him.

'Gram', Sword +1, +2 vs. spell-casters, INT 7, EGO 10, AL C, speaks through empathy
Detects magic
'Gram' was the blade of a barbarian named Gram who hated magic-users. Whenever the wielder of this blade is in the presence of a wizard, she feels a compulsion to slay them. Gram left a streak of dead witches and warlocks throughout Fogelon, until a wizard named Wilhelm proved to be too much for him.

'Skofnung', Sword +3, vorpal, INT 12, EGO 6, AL L, speaks Common, Morachi, Dwarven, and Thyranian, can read languages. Detects magic and invisible. Can levitate the bearer for 15 turns.
'Skofnung' was wielded by Thorkel, a warrior from the early days of the Solarian Empire. Thorkel led a band of barbarians against the attempts of Solaria to expand into Fogelon, but he was eventually slain when a Solarian mage summoned an invisible stalker to assassinate him.

'Gallowglass', 2-H Sword +1, +3 vs. undead, INT 8, EGO 6, AL L
Detects secret doors, traps.
Reed was a famed tomb robber, best known for a legendary set of thieves' tools. He commissioned Gallowglass to help him defeat the undead who tended to guard the more lucrative of these tombs. His friend, the sage Zakarios, worked with him on a translation of the epic story of the defeat of the lich king of Surash-Knaak, leading them to believe they knew where the lich king, and his treasure, was interred. They were correct: however, they did not know that the tomb was guarded by a massive iron golem. Zakarios escaped with the sword containing the soul of his friend, but himself was killed by bandits shortly thereafter.

Gauntlet of Law

The Gauntlet of Law was worn by Haradon, doomed emperor of Solaria, in his fight against the demons in the Second Demon War. It gives the wearer a permanent 'protection from chaos' and +1 to hit.