The Terra Blade is one of the most difficult swords to acquire in the game. It can be swung continuously, and fires a fast-moving, low-use time magical sword. This projectile will continue flying nearly indefinitely until it hits three enemies, goes off screen or hits a wall.
Just like most other melee weapons in the game, the best prefix this weapon can obtain is "Legendary".
The name Terra Blade may be a combination of Terraria and Blade.
The name might also come from the Latin Terra, which means earth.
The weapon is possibly a representation of purity, as its ingredients come from both light (True Excalibur) and darkness (True Night's Edge) to form a green (the color of nature) blade.
Despite being a melee weapon, the Terra Blade cannot be swung while the player has the "Silenced" debuff.
The Terra Blade's projectile can be fired through angle blocks.