Forktail Mutagen Via random Forktail encounters, including the side quest Contract: Dragon. If you're looking for more assistance, our Witcher 3 walkthrough can help. Describes the characteristics and attributes of a variety of monsters, zombies, demons, giants, werewolves, animals, and aliens for use in the Dungeons and Dragons game. You also now have access to a mount, Geralt's trusty horse called Roach.
They act like lesser blue mutagens when placed in the diamond-shaped slots in the character panel.