This is a high cost for speaking with the dead, a dark curse as well, I feel this could also be played by aging the summoner, taking a year of life for every minute, but that is harsh as well. Why not just use a cheaper, less deadly way to call the dead. Now, if you could substitute the target of the curse with another in your place, you could sacrifice children in your pursuit of knowledge leaving them old men or tapped. Oh man, this is harsh if used right. Go to Comment
The PCs have been traveling for a long time down the same stretch or round with no sign of anything suspicious. As they cross over to the next hill they see a gigantic splater of blood with a bleached dragons scull in the center of it. It the dragon skull's mouth is a tattered backpack with something wiggling inside of it.