Terraria (Wiki): Trimarang

The Trimarang is a type of thrown melee weapon that returns to the player after damaging an enemy (non-piercing), traveling for 27 tiles away, or hitting a solid object. The Trimarang can spawn up to three projectiles and is capable of autofire.

When normally used, the Trimarang will emit light, making the players see a little better in the dark. It also phases through any type of block when returning to the user. The Trimarang can also squeeze through one-block-wide gaps at the right range. When used on liquids, the Trimarang’s travel speed and range drastically decrease.

Although the Frostburn-inflicting Ice Boomerang is a crafting ingredient and possesses the highest knockback strength, such traits are not inherited by the Trimarang when used.

It is a general rule to aim above enemies for unlimited piercing when using the Trimarang. This unique property is possible thanks to all Boomerang’s capability of phasing through walls. One can easily handle a wave of slightly weak enemies and deal decent knockback with the Trimarang.

At the right range, enemies will receive two consecutive damage as the Trimarang goes to the target and back to the player. Damaging enemies on both ends of a wall is also possible when executed at the right position and range. This unique property makes the Trimarang pass through walls unhinged while keeping hostiles at bay.

There is less need to worry about not using the Trimarang again and forcing reset or relying on other weapons, as it spawns three projectiles and is capable of autofiring.

Since the Trimarang is a melee weapon, some accessories, all flasks, and armor can enhance its travel range, flight speed, and apply flask-related buffs.

The Trimarang is a proven weapon for dealing with small groups of enemies because of the multiple projectiles it can spawn simultaneously.

The Trimarang is best modified with Godly or Demonic, providing a wide array of stats improvement.