I'm of little importance

Puzzle

I'm of little importance, so off with my head;
To a foe I might then be the terror and dread.
Decapitate twice, and reverse what remains.
And lo! you've a wandering sprite for your pains.

Hint

Answer

References

• Loyd, Sam [1914]. in Loyd, Sam, Jr.: Sam Loyd's Cyclopedia of 5000 Puzzles Tricks and Conundrums (in English). New York: Lamb Publishing company, page 47.