Ashitaka's Bow {Bow of Beheading}

Obsidian Arrows. You gain a +3 bonus to attack and damage rolls made with this magic weapon. Arrows shot from this bow inflict 2d6 piercing damage as base damage. In addition, the weapon ignores resistance to piercing damage.

Demon Strike. When you attack a creature that has at least one head with this weapon and roll a critical on the attack roll, you shoot off one of the creature's heads. The creature dies if it can't survive without the lost head. A creature is immune to this effect if it is immune to slashing/piercing damage, doesn't have or need a head, has legendary actions, or the GM decides that the creature is too big for its head to be cut off with this weapon. Such a creature instead takes an extra 6d8 piercing damage from the hit.

Moro's Blessing.  Your movement speed increases by 5 feet, as does your jump height and distance. In addition, you have advantage on Stealth checks, and Acrobatics checks. 

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Ashitaka is the male protagonist in the 1997 Studio Ghibli film Princess Mononoke. He is the prince of an Emishi village who, after being cursed by a demon boar Nago, travels to the west to seek a cure and prevent his curse from falling onto another. Prince Ashitaka (アシタカ , literally translates to "Leap" in Japanese) is the protagonist of Princess Mononoke and prince of Emishi Village. He is often accompanied by his loyal giant serow Yakul.

This magic object was crafted by the magi of wonder and whimsy; Cameron the Clairvoyant. He loved to create, and was inspired by many things around him - people, places, things, concepts, nature, anime, pop culture - and loved to craft superior unique things for the Dungeons and Dragons community. Check out his homebrew creations in every category on D&DBeyond, and feel free to incorporate them into your homebrew campaigns. Cameron the Clairvoyant is a former player-character that reached level 20 and now functions as a NPC Archwizard, and has created numerous impactful magic items, weapons, subclasses, monsters, creatures, feats and spells. Seek him out in your next quest! He loves to take requests and interact with parties of player-adventurers.

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

Notes: Bonus: Magic, Damage, Combat, Ammunition, Range, Two-Handed, Vex