These blocks are known as “Sculk Sensors,” a mechanism that awakens the forceful Warden. So, how do you get and use these sensors in Minecraft?

Players can use the Crafter to make a variety of items in Minecraft. Here's how to make this great upgrade to the Crafting Table.

For example, it can detect block placement, block removal, fluid flow, and much more. But making this block can be a bit of a process. Read this guide to learn how to make an Observer in Minecraft.