Skulkin

A skulkin is a little mob such as baby zombie. They're pretty rare to spawn naturally and only spawn in the deep dark. Tho they're not hostile, they'll screech/scream when they detect a player, alerting the warden. Oh, skulkin would only detect player when they got too close, like, VERY CLOSE since they can't detect the player through vibration cuz I prefer the warden to be the only mob with this mechanic. This skulkin can be killed to get some kind of item to craft the skulk block.