The one time I've seen a Deck in play (back in 2e), one person drew Death, another drew a card that gave him a couple of Wishes.
The guy who drew the wishes card used one to make the other person's Death go away, and since he aided in the fight against the other pc's Death, he got a Death of his own to deal with. He wished that one away as well.
The DM ruled that both pc's were now immortal, Death would never come for them. As much curse as blessing, since they would age as normal, but never die.