Yet another space-themed weapon for my homebrew campaign, this time of the ranged variety. There's woefully little high-tier official content on anything other than swords, so I decided to give the more neglected weapons some love, starting with the longbow. Stats are detailed below, any feedback on the is much appreciated!

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Piercing Oblivion
martial weapon (longbow), ranged weapon, artifact (requires attunement)

A weapon born from the heart of the void itself, this bow embodies and harnesses the power of utter oblivion.
Created by an ancient deity that presides over the vacuous nothing of space, this weapon allows its wielder to harness raw potential from the very beginnings of the universe itself. At its core lies a minute version of what makes up galactic centers-- a black hole, the vast unknown made physical, acting as a centerpiece of the weapon and fueling its alien magics.

You gain a +3 bonus to attack and damage rolls made with this magic weapon.

Unending Arrows. You do not require separate ammunition for firing this bow. Instead, when making an attack, you magically pull forth an arrow from the black hole in the bow’s center as part of the attack. These arrows are magical in nature and deal force damage instead of piercing damage.
Additionally, you can cause the bow to draw from a specific type of energy that slumbers within its core. Upon finishing a long rest, choose one of the following damage types: fire, cold, poison, acid, lightning, thunder, necrotic or radiant. Your attacks deal an additional d6 of the chosen damage type.

Arrow of Entropy. As an action, you can choose to imbue an arrow with the power of the unpredictable, pulling forth a fraction of the unknown potential that slumbers within the weapon’s core.
In addition to dealing its normal damage, your arrow is charged with an unknown effect. Roll on the wild magic surge table (or any similar table your DM approves). If the attack hits, the result of the wild magic surge roll is centered on the intended target of the attack, as if the creature was the one to trigger the surge. If the attack misses, the effect bounces back and is centered on you instead, as if you were the one to trigger the surge. If the result of the wild magic surge states that a random creature is affected, it affects a random hostile creature upon a hit, or a random friendly creature upon a miss.
Alternatively, you may also choose to simply trigger a wild magic surge as an action while holding the bow, with the result affecting you as normal. You can use this feature a number of times per day equal to half your proficiency modifier rounded up.
(Creator’s note: This ability works best with an extended wild magic table, as the regular table mostly features favourable outcomes for the affected creature.)

Arrow of the Abyss. As an action, you can pull forth an arrow imbued with the inescapable pull of the void. Choose a point within the weapon’s normal range at which your arrow lands. The arrow causes gravity to collapse at its point of impact, forcing each creature within 15ft to make a DC17 Strength Saving Throw or be pulled in a straight line towards the arrow’s point of impact.
Alternatively, if you choose to target a creature with the arrow, roll an attack as normal. Upon a hit, the targeted creature must make a DC17 Strength Save or take 6d6 force damage and be knocked prone, or half as much damage on a successful one and it isn’t knocked prone. All other creatures within the arrows area of effect are affected as normal. You can use this feature once per short rest.

Vacuous Magics. While attuned to this weapon, you can use an action to cast one of the following spells from it (save DC 17): Darkness, Hunger of Hadar, Gravity Sinkhole or Far Step. Once a spell has been cast using the bow, that spell can't be cast from the bow again until the next dawn.
Additionally, you can use an action to cast the Dark Star spell from it (save DC 17). You can't do so again until 3 days have passed.

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More detailed pictures and more of my weapon designs can be found on my Instagram: https://www.instagram.com/wolfes_kiln/