The poem appears to be a tribute to J.R.R. Tolkien and his creation of the world of Middle-earth. It highlights Tolkien's ability to create an entire mythology and inspire the imagination of many people. The poem also emphasizes the themes of sacrifice and valor that are present in Tolkien's works. The use of the phrase "immortals walk among us yet" at the end of the poem suggests that the characters and stories created by Tolkien continue to have a significant impact on people today, even after his death.

Here is a possible rewrite of the poem using slant rhyme:

In dreams, when the moon silvered the night sky,
Tolkien strayed through elven lore to spy.
The Idlewild lay open to his eye,
Paths unmapped, yet waiting to try.
From these quests epics vast he wrought,
Lyrics and legends in tongues of thought.
Of valor in the face of Mordor's rot,
And sacrifice more precious than aught.
His myth-born mythology hath brought,
In every heart eager thoughts have caught.
Of peace restored at battles fought,
Through the words of the Bard, immortals sought.
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