Bonemerang

The Bonemerang is a Dungeon Bow. Its item ability fires a bone projectile which deals arrow damage on hit and returns to the user like a boomerang. It requires a Catacombs Floor 4 completion to use.

Crafting

 * Requirements
 * 5 Spirit Bones
 * 10 Enchanted Bone Blocks
 * 15 Enchanted String

Essence Crafting
This bow can be upgraded with wither essence.

Usage
The Bonemerang is a special bow. When its item ability is used, it fires a bone projectile forward 13.5 blocks. The projectile deals the damage of an arrow to any enemy it hits, but does not deal knockback, and can pierce up to 10 enemies. It travels in an arc like a boomerang, returning to the user after reaching its peak. If the user has moved, it will change direction to return to the user.

When the Bonemerang is traveling, it is unable to fire again until it has returned. If the projectile hits a wall, pierces more than 10 enemies, or is unable to return to the user, it will disappear and the item will be inactive for 3 seconds. During the time it is unable to fire, the item will take on the appearance of a ghast tear instead of a bone in the inventory. Other Bonemerangs may be fired when one is inactive.

The Bonemerang inherits the properties of the item the user is holding for damage calculation. For example, the high damage of a Giant's Sword or the damage bonus from a Death Bow will apply. Struck enemies also can trigger arrow bounce from abilities such as the Archer passive; in that case, an arrow will spawn from a hit enemy and bounce to another.

Trivia

 * The Bonemerang is a reference to Marowak's signature move in Pokémon.
 * Throwing it at Thorn stuns them for 3–5 seconds, making it easier to shoot them  with the Spirit Bow.
 * If you stop stunning Thorn they will begin to move very fast, making it very hard to shoot them.

Tips

 * Multiple Bonemerangs can be used to maximize damage by firing Bonemerangs while others are still returning.
 * When returning to the user, it can move 20 blocks before disappearing.