Sword of Legends is a powerful, endgame sword that will be a treasure for defeating the Prime Wight, the final boss of the mod, but this has not yet been implemented. Like all Betweenlands tools, the Sword of Legends deals more damage in the Betweenlands than vanilla tools. It will also stay in the player's inventory even if they die.
The Sword of Legends will be found in a "Good as new!" state of corrosion, with 0/255 corrosion points. Simply being in your inventory will cause it to start becoming corroded; using and swinging the sword as well as being in water will increase the sword's rate of corrosion. Corrosion decreases the damage output and effectiveness of the sword. The corroded sword can be cleaned in the Purifier. Visit the Mechanics page for more details on corrosion.
The Sword of Legends cannot be applied with Middle Gem modifiers. However, in the future, it will have all three gem modifiers automatically built into it, and will be able to "switch" between which one to use. This will allow it to adapt to any part of the Middle Gem Circle in order to maximize power.