Watcher (5e Creature)
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Medium humanoid, lawful evil
Saving Throws Dex +5, Int +5
Superior Invisibility. As a bonus action, the watcher can magically turn invisible until its concentration ends (as if concentrating on a spell). Any equipment the watcher wears or carries is invisible with it.
Punch. Melee Weapon Attack. +2 to hit, reach 5 ft., one target. Hit: 3 (1d6) bludgeoning damage.
Active Invisibility. When hit by an attack, a watcher can use its reaction turn invisible and move up to its speed. This movement does not provoke opportunity attacks.
Watchers are the creatures that are there when you feel like something is there. They are the bump in the night, the footsteps in the dark. Though they are mostly harmless, themselves. They watchers are the heralds of more sinister creatures.