SCP-966, The Sleep Killer

Sleep Killer creatures stay hidden until a player is close enough to be noticed, then show themselves and attack. Each one targets players within a 16-block radius and applies the Insomnia effect, which stops the player from sleeping and causes ongoing damage while the player hears noises from the creature. The effect only ends once the creature is dead or stops seeing the player. Players can defeat the creature without much difficulty, but the Insomnia effect is the real danger, since it leaves a player exposed through the night.

The mod is built with MCreator and needs Geckolib on Forge. Sleep Killers appear in the overworld above Y level 60, alongside the monsters that already spawn there, and several can be present at once. A config file is included. The mod is released for Forge 1.19.2 – 1.20.1 and is not open source. The 1.20.1 build is the latest file, and it is recommended for newer versions. The 1.19.2 build does not include the shield or the improved structure generation and custom villagers found in 1.20.1.