Living Weapon and Hammer of Nazahn
Both abilities trigger at the same time, so you can place them on the stack in the order of your choice. If you place Hammer of Nazahn's ability on the stack first, then it will resolve last. This means you will first attach the equipment to the Germ creature when the triggered ability from Living Weapon resolves, then you may attach it to a different creature when Hammer of Nazahn's ability resolves.