"Double Curse" a lyrical poem, care to C/C?

Long ago, in lands known only from tales we hear,

When stars were not yet named for any myth or bear,

There thrived two kingdoms, one by King so fair and just,

The other by a Queen whose herd and lands were vast;

These kingdoms merged as one, as were their rulers’ hearts,

And it was said, the sun shines mildly on these parts;

But not all hearts were happy in this paradise

A jealous sorceress gave them a grave surprise,

She turned the King each night into a hissing snake,

While in the day, the Queen into a mouse, she’d make;

Now, strange bedfellows are the snake and Queen each night,

While in the day, the mouse makes for the King’s delight;

Love took its course, although so strange, nevertheless,

The Queen’s belly has grown, so as to curse or bless,

And life it was that came into the light of day,

With both the curse of each parent it now would lay,

For in the night it coils about as would the snakes,

While in the day, it turns into a mouse that squeaks;

One fateful dusk, the mouse began its usual change,

But something came about that proved to be quite strange:

The part that’s snake devoured the other half that’s mouse,

Joined head-to-tail, the snake rolled ‘round the King’s courthouse.

And only when the night descended fully that

The snake found out it was its tail, it was biting at.