Minecraft wiki entry for 5CHP, associated text: The three then enter the castle, consisting of a floor of blackstone and several lanterns. Jake notices a faint blue light at the opposite end of the room. Upon further inspection, he notices that it’s water with a bubble column going upward. The three head up the bubble column to a small alcove, which leads them to another column of water, going downward toward a cave leading toward an ocean monument. Jake gives Emily and Tank potions of night vision, and the three explore the ocean monument. They go up against some guardians, but kill them with ease. The ocean monument also consists of a room filled with tiles that play music notes. Emily begins to feel like that TheCrestWizard may have set up the ocean monument as a decoy, but Jake insists that they are in the right place. The three eventually find the treasure room consisting of gold behind some dark prismarine. As Jake leaves the treasure room to double-check for any remaining areas they had not yet explored, he comes face-to-face with an elder guardian.