Demolishing Keeps (A structure)

It's a structure that's demolishing and pretty dangerous to explore and you can find mobs called Concealers that can camouflage with the surrounding rubble and can swarm kill you by flying down on you if you step on the wrong pressure plate that can be found occasionally on the cobblestone floors in the old Keep. Once you find the room with the treasure, you will have to solve 4 puzzles to unlock to door to a treasure chest with a chance to have 3 to 2 diamonds, 5 to 2 iron, 1 golden apple, 4 to 3 rotten flesh, 5 to 1 cobblestone and stone bricks, 6 to 5 redstone, 1 potion of night vision, and a special items that are recipe ingredients for the Stone conqueror which is a stone golem looking boss that has to be created in a special room in the Keep with items collected from other Keeps, Igloos, Witch Huts, Woodland Mansions, and Bastion Remnants that have to be placed on pedestals in the room to summon the boss. Once killed, it can drop 1 energized marble shard and 2 pieces of cobblestone. The shard can be combined with 2 redstone dust on the sides and chiseled quartz blocks on the top and bottom to create a block to store your XP I don't have a name for it yet.