Eyes in Darkness Mod (1.19.3, 1.18.2) adds one creature: the Eyes. Eyes in Darkness Mod adds the Eyes as the only hostile monster.
In Minecraft lands, the barrier between the worlds of the living and those of the dead is already thin. As Halloween approaches, the barrier becomes even weaker. Don’t look away if you can see the eyes. You do so at your own risk. You’ve been warned.