|True Master Sword|
Location and Uses
After Zelda blesses the Master Sword at the Sealed Temple, it becomes the True Master Sword. This extends the cross-guard's position outward while adding a white glow to the blade. With this final transformation, the True Master Sword becomes able to harm and defeat Demise. Additionally, the Skyward Strike charges faster, deals more damage, and increases its range. In Hero Mode, the True Master Sword can charge Sword Beams instantly.
- Encyclopedia (Dark Horse Books) pg. 142