(An experiment... Every line is taken from http://en.wikipedia.org/wiki/Will-o'-the-wisp, and I have put together some sort of poem thereby.)
He is a ghostly light in the wilderness,
Seen by travellers at night
As they ride from one fell land to another.
Hanging over bogs, swamps and marshes,
Doomed to haunt for some misdeed
Is the will-o’-the-wisp phenomenon.
He draws travellers astray,
Away from the safe paths;
Yet if you approach him he will recede,
And if you retire he will follow you.
An ember from the fires of hell:
He lights the way through the twilight world
To which lost souls are condemned forevermore.
He wanders in penance for his ancient deed:
A carved cross trapping the darkness to its realm.
But blackmailed by Satan he removed the carving,
And now he is cursed by the fruits of sin.
Flitting between heaven and hell,
He is a spirit,
A guardian of lost silver treasure;
Those brave enough to follow will find sure riches—