Collect 10 Power Gems, then return to Spirit Island in the far southwestern sea and power up the Spirit of Power. Do this again when you find 20 Power Gems.
phantom sword
you kill a phantom by getting the phantom sword and then hitting them in the back
You go to osha and he fuses the hourglass with the blade
you get the third precious metal for the phantom sword.
It's like the master sword, but with an hourglass in the middle of the handle
Once the Phantom Sword is in your possession, go to the Temple of the Ocean King, descend as far as you can, and face your final battle with Bellum.
First off its called the "Phantom sword" not the master sword and you have to get all 3 pure metals but i dont know its location after getting them
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they are sword, boomerang, bombs, bow, bomchus, grappling hook, hammer, and finnaly the phantom sword.
Blaaz
you have to buy the shields. However, with 10 or 20 power gems, you can get a fire sword at the fire temple.
Just go to a cave right of Oshu's house, writ the number 7 and you will have the sword.