Murkrag's Trove of Souls and Matter

From publisher blurb:

We have dived into Murkrag's compendium to find a trove of items for your Pathfinder 2e game! With 23 legendary new items, you can do something interesting for everyone. Perhaps you want armor made out of lycanhide that can transform itself to protect you. Maybe you have found a flail with hydra heads upon it that lash out at foes but might break free at any moment. All of this and more are presented in this trove! With detailed art for each item, you can find an item that best suits you!

This book is based on an original work by Goblin Society Games.