They say dragons are forever ... "Every OG5e begins with TPK" In the Dragonriders of Pern universe, the Red Star is a rogue planet orbiting Rukbat that periodically sweeps through the system's Oort Cloud, dragging deadly Thread spores toward Pern. This "hard rain" is known as Threadfall. Sensitive to fire, arcing your dragon up to breath fire on the spores is a good move, but still may not save you. The Threads devour all organic matter they touch, so, cool board wipe action to be had there