Lia is a witch who stays young, thanks to the powers of Patrick - who plays poker with people, gambling with years of their life.
Lia wishes to die, saddened that her daughter, now elderly has died. She gives Bobby and the Winchesters a reversal spell. As Dean and Bobby undertake to do it, Sam stalls Patrick by playing cards against him. When the spell fails, Dean's life is in the balance as Sam plays for real. Finally winning.
Lia tells Patrick she wants to die, having long outlived her daughter, and they play a hand in which she loses all her years.