This containment ended in Curse Of Strahd, when van Richten was forced to flee Vallaki in fear of a reprisal by Strahd. He left the saber-tooth behind, and she was recovered by The Pack. These adventurers convinced the Araseks to part ways with her and the wagon, and they took her with them on their adventures. Shakti of the Wildhunt magically charmed her and began to develop a bond with her, finally giving her the name Shredder for her terrible temperament and cheese-grater like plate mail.
Shredder accompanied The Pack for a few battles, notably assisting in a desperate fight against Wintersplinter atop Yester Hill. However, the cat longed explore the wilds, not be used as a battle animal. Ghalwin Forrester noticed this and acquiesced to her will, doffing Shredder of her armor and allowing her to depart into the Svalich Woods.
Shredder stayed alive after leaving The Pack, establishing herself as an apex predator in the woods. The group was eventually destroyed by Baba Lysaga, and Ghalwin reached to the Ladies Three for aid; in a moment of magical confluence, the three Archfey summoned Shredder to help their champion, who dragged him from Berez to the Vistani Camp. After protecting Ghalwin for days, Shredder again mysteriously disappeared.