A special system of fortune telling using a special pack of seventy-eight cards that consists of four suits of fourteen cards together with twenty two picture cards.
When Dean questions how a The Reaper is being controlled, Sam tells Dean he remembered seeing a cross and as he looks through some papers he holds a the Hierophant or Pope tarot card up to Dean. Which confuses Dean. Sam goes on to tell Dean how tarot cards date back to the "early Christian era, when some priests were still using magic," and how a few of those priests eventually veered into dark magic and necromancy in order to learn how to "push death away" or "how to cause it."
On the altar Meg uses to control the Daevas, a tarot card can be seen on the table representing "the Prophet", bearing the Zoroastrian Symbol.
3.10 Dream a Little Dream of Me
Bela is using her spirit board and tarot cards to find help from the dead.
4.12 Criss Angel Is a Douchebag
Charlie the Magician uses a grimoire and a deck of tarot cards to work real magic such as death transference and de-aging.
11.22 We Happy Few
Clea is laying out Tarot cards when Rowena stops by to ask for Clea’s help with a spell. When Rowena pleads for Clea's help, telling her the Darkness will be the end of everything -- including magic -- Clea tells her she is well aware, showing she has laid out nothing but death cards. Later when Sam is sent to recruit Rowena to help stop Amara, Rowena rebukes Sam while Clea entertains the possibility of helping. Rowena's continued protests of hopeless, prompt Clea to pick up her tarot deck, which shows the sun card, telling Rowena there is a chance.
15.06 Golden Time
While searching through Rowena's Apartment, Sam holds up the tarot card of Death.
The Hierophant represents the practical advice and wisdom of a priest or pope like figure, and authority on a religious/spiritual level, although in modern times, it can imply slightly negative overtones of attachment to dogma, and rigidity.