You were a human once, adventuring with your party. You remember it fondly. A tiefling, a high elf, and an orc. Then there was you. The little human. You were in a desert, taking refuge in a cave. And that's where it happened. They left while you slept, and you awoke to a beast gazing down at you. It dripped a glowing light blue ooze from it's eyes and mouth. It looked like a Coyote, but twisted terribly. It attacked you. It hurt. You screamed for your friends, but they didn't come. You died that night. But the very next day you found yourself conscious. You were still alone. You remember your death in great detail, and still have the wounds. Your body feels... odd. You're confused, frightened, and devastated. Your party left you to die, and now you have no one.
Why did they do that?
You will never be the same.