Obtain the Super Bomb after completing four dungeons. Then, go to the Bomb Shop where Link's House is in the Dark World. Purchase the Bomb. Take the Bomb to the crack in the Pyramid and blow up the wall. Enter the hole and throw your sword first (only if the sword is level 3), followed by your arrows, and finally the boomerang. You will receive the Gold Sword, Silver Arrows, and the Magic Boomerang. Note: The boomerang should turn a reddish-orange color.