Witch-killing spell

The Witch Killing Spell allows a hunter to kill any malevolent witch. To date, it has been used successfully against only one witch. Sam and Dean first learned of this spell from Bobby.

Procedure
Two variations of this spell have been used on the show.

Ingredients
The exact ingredients have never been mentioned on the show. Chicken feet though, is a confirmed ingredient. The quantity again was never mentioned. Just having chicken feet is not enough. It has to be properly chilled. Otherwise it renders the spell ineffective.

Incantation
In Shut Up, Dr.Phil, Sam and Dean planned to use this spell against Don and Maggie Stark. The ingredients were combined in a bowl followed by an incantation: Furor divina virtute in infernum eam detrude (Latin for "The madness of it by the power of God thrust down to hell.") The contents of the bowl are lit on fire. White smoke and steam rises, but nothing happens because the chicken feet weren't chilled.

In Man's Best Friends with Benefits, another variation was shown. The contents for the spell were filled in a bottle which had a cloth stuffed at the neck. The incantation this time is: Ego voco impetu delere...vos caelum et infernum ("I call for the attack would have destroyed you, heaven and hell"). The cloth is set on fire and the bottle is thrown like a molotov. Spencer was killed by this variation of the spell.

In Brother's Keeper, Sam has made Witch Killing Bullets by filling hollow point bullets with a brew of the Witch Killing Spell. He has threatened to kill Rowena if she did not remove the mark of cain.

Effects
Once the spell hits the witch, a swirl of smoke engulfs the witch as he turns into blood & ash and disappears. This spell, unlike the demon bomb, affects only an individual, rather than everyone in the spell's radius.

Appearances

 * Season 7
 * Shut Up, Dr.Phil (attempted)
 * Season 8
 * Man's Best Friend With Benefits
 * Season 10
 * About a Boy (attempted)