End Watcher

Mob

The End Watcher is a floating eyeball mob that cries golden tears that inflict the glowing effect. It sticks around one location and can spawn as a partner for the sculk watcher in the stronghold. It only cries while targeting a mob. The glowing effect helps the sculk watcher see its targets through the wall.

Redstone

When an end watcher dies its eye falls and can be preserved through means such as bubble column stasis chambers. The preserved eye will continuously cry inflicting the glowing effect.

Eye of ender

Default watcher for watcher spawns from Eyes of Ender. See Eye of Ender.