From CloudModding MM Wiki
Codes that allow you to play around with the magic metre in Majora's Mask.
Codes by Volvagia356.
Change Magic Metre State (Normal, Double, etc.) 811EF6B0 ???? ????= 0000 - None 0100 - Normal 0101 - Double Infinite Magic Metre for: 801EF6A9 00?? ??= 00 - No Magic 30 - Normal (Fills up the magic to the size of the normal bar) 60 - Double (Fills up the magic to full *You can also edit this for different Magic Metre amounts