A point of interest. The back of the Twilight Mirror is appears to be based upon the Hyrule phoenix (the bird emblem that is the current symbol of Hyrule). The Triforce represents the head (as is the tradition) and the talons can also be seen. The wings have been replaced by the twin snakes that represent the Twilight Realm.

I would also go as far as to say the snake represents betrayal, and that it is why it used regarding the Twili, and why Zant looks snake-like.

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What if Majora's Mask was never made? / The last interesting timeline topic on ZU /
Disproving the Divine Prank myth