The Master Sword in the Zelda universe is well known for its ultimate power. In previous games, when Link obtains the mythical sword of legend, you know that the end is not far off. In A Link Between Worlds, the Master Sword is obtained very early in the game. The following section briefly describes how to upgrade the most powerful sword even further.
Forgotten Sword
Description: This sword was specially forged for the Captain of the Guard by the Blacksmith. It may not inflict much damage but it is masterfully forged and fits in your hands perfectly.
Location: It is given to Link in the beginning of the game at the Blacksmith to be delivered to the Captain. What kind of Captain forgets a sword as finely forged as this?
The Master Sword
Description: The Master Sword is the sword of legend and is the only one in existence. Only a true hero can wield this blade.
Location: Find it in the Lost Wood after obtaining all three Pendants. Pull it from its altar, hero of legend!
Level 2 Master Sword
Description: At level 2, the Master Sword is sharpened and much more fearsome than its previous form. It causes double the damage that the standard Master Sword inflicts. Who would have thought that the Master Sword could become even more masterful?
Location: After obtaining two pieces of Master Ore, take them and the Master Sword to the Blacksmith of Hyrule to be forged anew.
Level 3 Master Sword
Description: The third and final enhanced version of the Master Sword can inflict twice the damage of the Level 2 Master Sword. Is your mind blown yet?
Location: After finding the last two pieces of Master Ore, take them to the superior Blacksmith of Lorule and witness as he forges the Master Sword for a third time into the most brutal tool of destruction imaginable.