Nightmare

The Nightmare is a hostile creature from the Witchery mod. This creature is found in the Spirit World, but only when the player is experiencing a nightmare. The Nightmare monster is a physical representation of the nightmare that you experience in your sleep. It will haunt and attack you, dealing 1-2 hearts of damage, or 2-4 health points of damage. Nightmares have 50 hearts of health, or 100 health points, and will respawn shortly after being slain. They will always respawn nearby to the player, so attempting to kill it without the desire for it's drops is useless. Having a Charm of Fanciful Thinking in your inventory is your only form of protection from the Nightmare, as dreams strip you of your armor and items. When slain, it can drop Mellifluous Hunger.