One of the members of the Third Eye, Vetto, appears at the Underwater Temple along with his underlings.
Then, you wrap that lightning 
string around Magna, like this.
.وبعدها تلفّون ماغنا بذلك الخيط هكذا
Und dann wird das Blitzseil
um Magna gewickelt.
Envuelven a Magna con la cuerda.
Envolvéis a Magna con la cuerda.
Ensuite,
je l’enroule autour de Magna.
Dopodiché, avvolgete la corda di fulmini
attorno a Magna, in questo modo.
Depois, amarre no Magna, assim.
Затем наматываем эту нить на Магну.