A piece of Applied Phlebotinum that doesn't work unless you pay a really ghastly price... or have someone else pay that price for you.
Can have The Dark Side effect, as in being willing to pay the price can make you more evil. May be the result of a Deal With The (Super-Powerful Alien) Devil. See also Black Magic and Utopia Justifies the Means.
May be a form of Aesoptinum. May use Human Resources [...] [tvtropes.org]