Darkness emitters

This block would be found naturally in deep dark biomes, but found more often in ancient cities. It disguises itself like normal sculk, but can be identified by a mouth-like hole on the top. When a player steps on it, it will puff out a cloud of darkness similar to when you hit a squid, and fully disperses after 30 seconds. This does not make much sound, so it would not set of sensors/shriekers. It's job is to make players panic and trigger the sensors themselves. It can be obtained through silk touch, and would let out a Redstone signal when triggered, making it perfect for building traps with.