" A geas was a contract with the goddess of Fate. Sometimes one was born indentured, other times it was bestowed upon one as a curse. Because if one did not fulfill the terms of one's geas, one died. It was old magic, the magic of the gods, spoken in the tongues of those who controlled the dragons—and it was supposed to be extinct. "

― Nenia Campbell , Touched with Sight (Shadow Thane, #2)