The Golden Hammer appears once you either reach lvl 50, or if you have 3 Collabs active at the same time.
To use the Hammer, you need to have the items to make one of the game’s Super Collabs, which merges a Collab with items to make an extremely powerful weapon. This is done with a Golden Anvil in the same way that normal Collabs are made.
Here are the Super Collabs available as of the 0.6 update:
- Dragon Fire + Gorilla’s Paw = Holy Fire
- Idol Concert + Idol Costume = Idol Live
- Elite Cooking + Uber Sheep = Jingisukan
- Snow Flower Sake + Sake = Snow Queen