When you nock a bolt on this crossbow, it whispers in Elvish, "Swift defeat to my enemies." When you use this weapon to make a ranged attack, you can, as a command phrase, say, "Swift death to you who have wronged me." The target of your attack becomes your sworn enemy until it dies or until dawn seven days later. You can have only one such sworn enemy at a time. When your sworn enemy dies, you can choose a new one after the next dawn.

When you make a ranged attack roll with this weapon against your sworn enemy, you have advantage on the roll. In addition, your target gains no benefit from cover, other than total cover, and you suffer no disadvantage due to long range. If the attack hits, your sworn enemy takes an extra 3d6 piercing damage.

While your sworn enemy lives, you have disadvantage on attack rolls with all other weapons.

This weapon is decorated with dragon heads, claws, wings, scales, or Draconic letters. When it steeps in a dragon’s hoard, it absorbs the energy of the dragon’s breath weapon and deals damage of that type with its special properties.

Slumbering (Uncommon). Whenever you roll a 20 on your attack roll with this weapon, each creature of your choice within 5 feet of the target takes 5 damage of the type dealt by the dragon’s breath weapon.

Stirring (Rare). The Stirring weapon has the Slumbering property. In addition, you gain a +1 bonus to attack and damage rolls made using the weapon. On a hit, the weapon deals an extra 1d6 damage of the type dealt by the dragon’s breath weapon.

Wakened (Very Rare). The Wakened weapon has the Slumbering property, and it improves on the Stirring property. The bonus to attack and damage rolls increases to +2, and the extra damage dealt by the weapon increases to 2d6.

As an action, you can unleash a 30-foot cone of destructive energy from the weapon. Each creature in that area must make a DC 16 Dexterity saving throw, taking 8d6 damage of the type dealt by the dragon’s breath weapon on a failed save, or half as much damage on a successful one. Once this action is used, it can’t be used again until the next dawn.

Ascendant (Legendary). The Ascendant weapon has the Slumbering property, and it improves on the Stirring and Wakened properties. The bonus to attack and damage rolls increases to +3, and the extra damage dealt by the weapon increases to 3d6.

The cone of destructive energy the weapon creates increases to a 60-foot cone, the save DC increases to 18, and the damage increases to 12d6.

When you hit with an attack using this weapon, the target takes an extra 1d6 cold damage. In addition, while you hold weapon, you have resistance to fire damage.
In freezing temperatures, the blade sheds bright light in a 10-foot radius and dim light for an additional 10 feet.

When you draw this weapon, you can extinguish all nonmagical flames within 30 feet of you. This property can be used no more than once per hour.

In the world of Greyhawk, only nine of these blades are known to exist. Each is patterned after the legendary sword Fragarach, which is variously translated as “Final Word.” Each of the nine swords has its own name and alignment, and each bears a different gem in its pommel.

You gain a +3 bonus to attack and damage rolls made with this sword. In addition, while you hold the sword, you can use your reaction to make one melee attack with it against any creature in your reach that deals damage to you. You have advantage on the attack roll, and any damage dealt with this special attack ignores any damage immunity or resistance the target has.

Answerer is the Chaotic Good sword and contains an emerald as its gem.

You gain a +1 bonus to attack and damage rolls made with this magic weapon. While the sword is on your person, you also gain a +1 bonus to saving throws.

Luck. If the crossbow is on your person, you can call on its luck (no action required) to reroll one attack roll, ability check, or saving throw you dislike. You must use the second roll. This property can't be used again until the next dawn.

Wish. The sword has 1d4 – 1 charges. While holding it, you can use an action to expend 1 charge and cast the wish spell from it. This property can't be used again until the next dawn. The sword loses this property if it has no charges.

Proficiency with a Light Crossbow allows you to add your proficiency bonus to the attack roll for any attack you make with it.

Notes: Bonus: Magic, Damage: Additional, Damage: Piercing, Bonus: Magic, Damage: Cold, Resistance: Fire, Bonus: Magic, Bonus: Saving Throws, Ammunition, Loading, Range, Two-Handed, Slow