This is a tricky puzzle in The Legend of Zelda: Echoes of Wisdom. In the Faron temple you will encounter the boss at the end named Gohma. It is a spider like creature that has crystals on 3 legs and one big eye. You can target the crystals and send an electric echo after them. Once you get all Gohma will fall to the ground and you can wail on the eye until you win.
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