|Environment||Surface – Night|
|AI Type||Silent Observer AI|
The Silent Observer is a post-Moon Lord enemy that spawns at night. When it is within a 15-tile radius of the player, it slowly hovers around the player, firing nightmare runes and occasionally charging at them. Outside this radius, it hides inside its armor, becoming invulnerable and charging quickly at the player until it returns within the radius.
- The player is required to farm these enemies to obtain Sinister Elements in order to summon Abaddon, the Source of the Affliction.