White dragon… from the Chalice of Mystery

Thad was twenty feet away. The white dragon lunged forward and consumed him with a single gulp!
“Breath weapon!” Ravenna screamed.
The thirty foot long white dragon exhaled bone-breaking cold and killed the thirteen men in the cavern. Those standing at the entrance of the cavern that turned away at Ravenna’s urging received only some frostbite to their backsides.