If you read Tolkien, you may remember the poem Errantry, or its sibling Bilbo's Song of Earendil. The meter for both these poems is the same, and invented by Tolkien - a complex thing involving trisyllabic assonances. As Tolkien said, he only wrote one poem in it - it's just too hard.

That sounds like a challenge to me.

This is not perfect. I can get the sections to partially rhyme (assonate?), but not nearly as well as Tolkien (obviously). Still, I think it's quite nice as poems go - see what you think. (And, while you're at it - see if you can do any better!)

Darknesses

A darkness lies on all the worlds
That wrought with words should burn so fair,
Enlighten minds and uplift hearts
And worlds apart should take us there
Where fire and water spread their wings
And angels sing and mountains rise
And all humanity's desires
Are crystal spires before our eyes.

But darkness lies on all those worlds,
Wrought from words that freeze like ice
That forsake plot and character;
And every narrative device
That ought to spin a tale so fair
Is twisted there to serve the true
And honest and most wicked cause
Of fiction's flaws - the Mary-Sue!

And darkness lies on all these worlds
For pretty girls and boys so strong
Can bear no glory not their own
And, save their own praise, sing no song.
Thus, one-dimensionally formed
They barely form a plot at all
But wrench the story from its roots
And 'neath their boots they crush it all.

But darkness comes unto the worlds
Where plotholes whirl and Sues attack:
When canons see a radiant door
Their saviours draw near - dressed in black.
And, bearing emblem cactus-green,
They move unseen beneath the trees
And hunt the Sues and still their words
To shield the worlds - the PPC!

Yes, darkness lies on all the worlds
But though Sues hurl the canon down
A darkness new will break the night
And set to rights the canon's crown.
Protectors of the written plot
Who ne'er forgot the canon's song
The PPC will save the worlds
From pretty girls, and boys so strong.

And when at last their job is done
They turn as one and walk away
Until the console gives the word
To save the worlds another day.

hS