Rhaegal, White Dragon

Rhaegal is a white dragon, a very powerful and old one, about a hundred feet in length, who the players met in the southern tundra in November of 1168. He had apparently broken off loyalty to Demogorgon, whom he referred to as the Sibilant Beast, and in later conversation, everyone pretty much just called him Big D. He was tasked with recovering some magic items that were to be given to favorite minions, but learned that he would be given none of these items and killed for his knowledge, so he hid them magically and fled.

He was being hunted by a very powerful Retriever and its minions, and the party defended him and slew them all, receiving very rich rewards.

He granted each of them an enchantment, from a shard of one of his dragon scales. It will put an enchantment that will block the next attack that does any percentage of their health they choose, and also can add a second effect that will block the next attack that takes them below zero hit points. The enchantment will last fifty days, or until used.