From The Shadows Mod for Minecraft 1.19 and 1.18.2

Wanting to find demons in the caves? Sure… why not?

From The Shadows 1.19 and 1.18.2 is a mod that will be responsible for generating, naturally in the caves, a new and powerful enemy, the so-called Nehemoth. It is a powerful and aggressive creature. They are nocturnal creatures, so sunlight turns them into stone statues.

Players who defeat a Nehemoth will not get any featured item, unless they use a glass bottle on its body when its health is below ten points. This will allow us to get a vial of Nehemoth blood, which we can use to craft Nehemoth armor, which is similar to Netherite armor.

The armored Nehemoth are something like the elite soldiers of the demons. Players will not be able to do any damage to them while their armor is activated, so we will have to destroy their armor by hitting them when they launch a ranged attack.

Once we manage to destroy his armor we will have to be fast to finish him off, since his armor has the ability to regenerate, so if we are not fast we will have to destroy his armor again. When dying this variant will release Ancient Debris, although the probability is low.