True Night's Edge

The True Night's Edge is a Hardmode sword. It has the highest base damage of any Pre-Plantera sword. It is also a stronger version of the Night's Edge, doing more damage and firing a glowing, spinning, green circle projectile called "Night Beam" in the direction of the cursor every .86 seconds on average. Because this ability has a short cooldown, not every swing of the sword launches a Night Beam. The True Night's Edge is one of the ingredients required to craft the Terra Blade.

On the versions, the True Night's Edge is able to autoswing.

As of 1.4.4, the True Night's Edge now fires a spinning purple and green energy blade.

This projectile is unique in that it moves with the player, meaning if the player is falling quickly and swings the sword, the projectile will not get left behind, and will stay in the same position relative to the player, albeit flying away. This can make it difficult to use, especially against bosses, as it forces the player to remain aligned with an enemy in order to use the projectile effectively, which makes dodging while firing sword projectiles at an enemy less viable.

Trivia

 * The Night Beam seems to resemble a regular Night's Edge colored green, rather than a True Night's Edge.
 * The beam color resembles that of Cursed Flames.
 * Unlike most projectile swords, the True Night's Edge fires a spinning projectile instead of a straight one.
 * The True Night's Edge resembles the old sprite for the Night's Edge, with duller shading.
 * The True Night's Edge is the item referenced in the foil Terraria badge.