The Wolf's Curse

Ship's Log 1: Wrenn Lingenhall was bitten by a werewolf in Selunius's lair and has contracted lycanthropy, a curse that turns them into a chaotic evil beast in the presence of moonlight. Wrenn has chosen not to embrace the beast within and so has no control over the form and wants to cleanse the curse as soon as possible.

Ship's Log 2: Madame Mystica has informed them that Wrenn's sire is none other than the Prime Werewolf, the originator of the curse and an incredibly powerful beast that lives as a hermit out in the lunar wastes. She said the only ways to cure lycanthropy would be to kill the sire or to destroy an item of great value to him and use its essence to cast Remove Curse.

The party tracked down Sulumor, the Prime Werewolf, killed him and took both his heart and the ashes of the doll belonging to his late daughter.

Ship's Log 3: Wrenn used the ashes of the doll to cast Remove Curse and cure their lycanthropy, but then consumed the Heart of the Prime Werewolf in a ritual connected to the power of The Beastlands, which granted them power over the form and the ability to control when the transformation happens.