Item - 13th Constellation - King's Arrow

The 13 Stellar Armaments

13th Constellation - King’s Arrow

Weapon (light or heavy crossbow)

The crossbow, represented by the King's Arrow constellation, was once bestowed upon the last known Stellar Watcher, a man simply referred to as Zephyr. An assassin hailing from a secret order in service to the Azalis royal family, Zephyr was renowned as an extraordinary archer. Employing his skills, he would execute targets with a single arrow shot from extraordinary distances. Shortly after abandoning his secret order in search of a more peaceful existence, he was discovered by Professor Vigil. Through persistent effort, Vigil guided him to find new purpose under the celestial watch of Lirianyx. Zephyr then received the cosmic crossbow as his Stellar Armament, imbued with the hope that he might wield it for a nobler cause.

Often regarded as the mightiest among the Stellar Armaments, the King's Arrow's reputation is amplified by the tales of Zephyr's exploits. He managed to eliminate numerous significant figures within the ranks of the Children of One and the Chaos Touched. Myth has it that with knowledge of a target's true name or exact location, Zephyr could strike and kill them, even from the other side of the continent.

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The crossbow's bolts deal force damage instead of piercing. Additionally, when you score a critical hit with this crossbow against a creature, it casts Magic Missile at the target. The level of the spell is equal to half your proficiency bonus, rounded down. This casting doesn't require a spell slot or components.

Charges: The King’s Arrow has 5 charges and regains 1d4 expended charges daily at dusk.

Mark of the Star. As a bonus action, you can expend 1 charge to mark a creature you can see within 120 feet of you. For the next hour, your attacks against the marked target deal an extra 1d6 damage, and you have advantage on Wisdom (Perception) and Wisdom (Survival) checks to find it. You also know the marked target's exact distance and direction from you. The mark ends if the target drops to 0 hit points, you mark a different creature, or if the creature and you are on different planes of existence. This effect requires concentration, as if concentrating on a spell.

Star Rail. As an action, you can expend 2 charges to transform the King’s Arrow into a giant stationary ballista of cosmic energy. While in this form, you gain temporary hit points equal to your level + your proficiency bonus and are considered to have half-cover. As an action, you can make a ranged weapon attack to fire a beam of radiant light up to 300 feet. This beam deals 3d8 radiant damage on a hit. While in this form, you may expend an additional charge to shoot a 5-foot-wide, 100-foot-long line of radiant light from the ballista in a direction you choose. Each creature in the line must make a Dexterity saving throw (DC 15), taking 5d8 radiant damage on a failed save, or half as much damage on a successful one. The ballista form lasts until you lose all the temporary hit points gained from this feature, until you become unconscious, or until you use a bonus action to revert the King’s Arrow to its crossbow form.

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13 Stellar Armament. As long as someone is attuned to the Phantasmagorical Planetaria, they or any creature of their choice that touches this item become attuned to it without taking up their attunement slot. The DC for this item’s ability equals 13 + the number of Stellar Armaments that are being worn or carried. This item's charges are increased by half the number of Stellar Armaments that are worn or carried, rounded down.

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The last known Stellar Armament is an odd-looking "crossbow" that shoot cosmic energy bolt. and along with it, I include a hidden legendary feature (probably because I saw Fate Grand Order's new commercial video while making this one... So I have the sudden urge to make a Noble Phantasm-like ability...)

And that's all 13 Stellar Armaments~! But wait, there's one more~! The last one will be the 14th Constellation - Nebula, an incomplete stellar armament. I hope you'll look forward to that~!

PS: The files will be added to the Stellar Armament folder in the Vault Post.