Limited Magic Immunity. The watcher can't be affected or detected by spells of 3rd level or lower unless it wishes to be. It has advantage on saving throws against all other spells and magical effects.

Innate Spellcasting. The watcher’s innate spellcasting ability is Wisdom (spell save DC 18, +10 to hit with spell attacks). The watcher can innately cast the following spells, requiring no material components:

At will: detect thoughts, minor illusion

3/day each: invisibility, major image

1/day each: greater invisibility

Broadcast. An arcane user can cast scrying on the watcher and become able to view through the watchers eye or become able to display the watchers vision as a live feed on a illusionary screen until the watcher is slain.

Watcher's Eye. The watcher has advantage on (Perception) checks.

Shadow Plate. The watcher has advantage on (Stealth)checks.

Escapist. The watcher can Disengage, Hide, or Dash as a bonus action.

Multiattack. The watcher makes two claw attacks.

Claw. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 9 (1d6 + 3) slashing damage, and the target is cursed if it is a creature. The magical curse takes effect whenever the target takes a short or long rest, filling the target's thoughts with horrible images and dreams of the hive mind. The cursed target gains half benefit from finishing a short or long rest. The curse lasts until it is lifted by a remove curse spell or similar magic or until 3 days have passed.