Gray Wolf tribe

The Gray Wolf Uthgardt tribe have a characteristic that every single member shares. Under the light of the full moon, they all turn into savage werewolves. This is a legacy of when the tribe accepted refugees from fallen Gauntlgrym into their fold. These refugees had just been attacked by lycanthopic illithid thralls who carried the curse and then went on to transfer it to their saviours. The tribe's beast totem mutated the curse over time as the Gray Wolves embraced the savagery inherent in it. They all turn into werewolves, despite their ancestor and any Gray Wolf who does not wish to share the curse will be cured within a year if they leave the tribe.