Hold Nickar Sacrifice Rite

This ritual was performed by Madge Carrigan and Edward Carrigan (both of them are Hold Nickar, Teutonic Pagan Gods of Winter Solstice), for appeasing themselves and renew their powers. The ritual seems only performed once a year, when solstice, which coincidentally in Christmas.

Procedure
The details of the ritual was uncertain. But firstly, Madge makes wreaths out of meadowsweet, and the people who buy the wreaths are taken for sacrifices. They later abducted via their house's chimney and eventually killed for their blood.

When Madge and Edward find Sam and Dean snooping around in their blood-splattered basement, they take the brothers prisoner and start their ritual preparation for sacrifice. The ritual need an altar which consisted by some candles, plates, sharp objects for obtain the victim's blood, and also various numerous things. This involves cutting them both to obtain blood. Edward pulls out one of Sam's fingernails and is about to pull one of Dean's teeth.

However the ritual wasn't completed because they are distracted by the doorbell, and the brothers are able to escape their bonds. Dean stabs Edward with a branch from a Christmas tree while Sam stabs Madge with another branch, killing them.

Appearance

 * Season 3
 * A Very Supernatural Christmas