"Cirdan, yes. I dreamed about him, and the giving of this ring. I was on some important errand. There were five of us sent...."
Gandalf turned his hand over, and back, looking at the ring, as if trying to decipher it's meaning, "I was wearing this ring, and I stood upon a bridge deep beneath the earth. There was a terrible creature of shadow and fire."
His eyes grew distance, his voice took on a deeper quality, and it seemed as though the sun outside dimmed, "I am a servant of the Secret Fire, wielder of the flame of Anor. You cannot pass. The dark fire will not avail you, flame of Udûn. Go back to the Shadow! You cannot pass."
"I held a glittering sword and a staff, and the sword and the creature's red blade clashed. I shattered it's weapon!"
Gandalf continued to be lost in the memory, or the drea, "It stepped upon the bridge. Behind me I could hear my allies, my friends coming to my aide, but they could not stand against this power. I took my staff and I smote the bridge, and sent the creature into the abyss. But it took me with it."
At least, he whispered, "Fly, you fools..."
And then all seemed normal, and he blinked his eyes, stunned.