Verbal Reasoning!

[Celuien]

The One Ring is the correct answer!

“Seek for the Sword that was broken:
In Imladris it dwells;
There shall be counsels taken
Stronger than Morgul-spells.
There shall be shown a token
That Doom is near at hand,
For Isildur's Bane shall waken,
And the Halfling forth shall stand.”

So the Ring was directly referenced as a token of Doom...at least if that's how you read the poem.

And if you reverse the letters in mood you get...doom.

Clue might have been a bit off. But you got it. Thread is yours.