Old Shaking Chest

The Old Shaking Chest is a rare entity that can be found in the Cavern layer after Skeletron has been defeated. It resembles a Chest and hops around like a slime, attempting to reach the player. It does not damage the player nor take damage from them, but it does take damage from enemies. If the player presses the button on it while having a Golden Key in their inventory, it will transform into the Elder Slime. Afterwards, the Old Shaking Chest will no longer spawn.

If the Elder Slime is killed, it will respawn naturally without the need to unlock another Old Shaking Chest. Only one Old Shaking Chest can be alive at a time.