Wardens don’t spawn regularly like most other mobs. Instead, players have to go down into the Deep Dark and search for a redstone block called a Sculk Shrieker. These little square tiles have blue, glowing tops and four white pieces coming off corners. As the name suggests, these tiles shriek when a player steps on them or when they set off a nearby Sculk Sensor. Players may have to trigger that shriek multiple times if the Warden doesn’t appear right away, but one will eventually spawn so long as the light level is lower than 11 and there isn’t another Warden within 48 blocks.
Being subterranean creatures, Wardens are completely blind, relying on detecting vibrations and their sense of smell to find nearby enemies. This means they can detect players through walls. Just because they can’t see doesn’t mean that fighting one is easy though. Wardens were designed to be difficult to kill, inspiring most players to try and sneak past them or avoid summoning them altogether.
