Vertebrae Sword of the Sun and Moon

A creature in possession of both the Lunar Weapon and the Solar Amulet can perform a 1-hour ritual (as if attuning to a magic item) to combine those items, forming the Weapon of the Sun and Moon. In addition to having the properties of both the Lunar Weapon and the Solar Amulet, this weapon is considered a +1 Weapon and gains two Eclipse Powers. During the day, the Weapon of the Sun and Moon can use its Eclipse Power to cast the Darkness spell; this version of the spell creates a 60-foot-radius sphere of darkness, instead of its normal size. During the night, it can use its Eclipse Power to cast the Daylight spell. Once the daytime Eclipse Power is used, it can't be used again until the next dawn; once the nighttime Eclipse Power is used, it can't be used again until the next dusk.

Special: The jagged vertebrae sword of a fishfolk warrior can barely be called a sword. Locals would say it's better described as a makeshift weapon crafted from a fish skeleton and sea trash. Its poor construction is the reason it's not often a weapon seen on land, though when used by a skilled fighter, it most certainly can be a formidable tool. When you successfully hit a creature with a vertebrae sword, you can use a bonus action to rake and twist the weapon, breaking off some of the sword's boney barbs and dealing an extra 1d8 piercing damage. The vertebrae sword can only be used in this way 5 times before it becomes unusable as a weapon.

Proficiency: martial, vertebrae sword Source: Obojima: Tales from the Tall Grass p. 173 (Third Party), Obojima: Tales from the Tall Grass p. 158 (Third Party)