Shadows of Abaddon Mod Wiki
Abaddon, the Source of the Affliction
Abaddon, the Source of the Affliction.png
Type Boss
Environment Night
AI Type Abaddon, the Source of the Affliction AI
Damage 85 / 100
Max Life 300,000 / 400,000
Defense 90
KB Resist 100%
Coins 1 Platinum Coin
Item (Quantity) Rate
Trace of Chaos.png Trace of Chaos
• 25-35
Abaddon Mask.png Abaddon Mask
Abaddon Trophy.png Abaddon Trophy
Treasure Bag (Abaddon, the Emissary of Nightmares).png Treasure Bag (Abaddon)
• in Expert Mode only

Map Icon Abaddon, the Source of the Affliction.png
Map Icon

The brightest light casts the darkest shadows...

Status Message

Abaddon, the Source of the Affliction is a Post-Moon Lord boss fought at night on the Surface. The boss has multiple forms, each more powerful than the last.


Abaddon does not spawn on his own and requires the player to use a Nightmare Catcher anywhere at night.


Phase 1[]

  • Flies towards the player.
  • Fires several despair runes at the player.
  • Fires gravity-affected despair fire in quantities of eight.
  • Summons unique Nightmare Spirits which attempt to float above the player and fire smaller despair runes.

Subphase 1[]

Upon reaching 300,000 life, Abaddon disappears and spawns a group of 20 Despair Adversaries. These will attempt to float around the player.

Phase 2[]

Upon defeating all twenty Despair Adversaries, Abaddon will reappear and phase 2 will begin.

  • Quickly attempts to fly towards the player.
  • Rapidly fires homing despair runes.
  • Quickly fires volatile fire, which moves for a short time before halting and exploding after a short time.
  • Summons Nightmare Guardians.
  • Stands still for a few seconds, creating a ring of 6 purple fire-like projectiles, which will then spin and be released.

Subphase 2[]

Upon reaching 100,000 life, Abaddon will disappear again and create a ring of Nightmare Souls, which will circle the player and fire despair spikes. Leaving this ring will inflict the Nightmare Fog debuff, killing the player swiftly.

Phase 3[]

Upon defeating all Nightmare Souls, Abaddon will reappear and phase 3, the final phase, will begin.

  • Fires homing despair runes extremely quickly.
  • Extremely quickly attempts to fly towards the player.
  • Very quickly fires volatile fire in quantities of twelve.
  • Fires despair fire into the air at a quick pace.
  • Creates the ring of purple fire without stopping.
  • Fires large despair orbs which split into four other despair orbs after moving a short distance.
  • Summons Nightmare Spirits.

In True Mode[]

  • Fires projectiles at higher speeds.
  • A second ring of Nightmare Souls orbit him in subphase 2.
  • Minions also appear in phase 3.


Image Name Condition
Nightmare Spirit.png Nightmare Spirit Always
Nightmare Guardian.png Nightmare Guardian Subphase 1 and Phase 2 (Phase 3 in True Mode)
Nightmare Soul.png Nightmare Soul Subphase 2



  • Abaddon, the Source of the Affliction's theme is Insomnia, which was composed by the artist Lordcakespy.
  • Abaddon's title used to be the Emissary of Nightmares. This was changed in the update.


  • Renamed from Abaddon, the Emissary of Nightmares to Abaddon, the Source of the Affliction.
  • Reduced the amount of spikes in the Nightmare Soul miniphase.
  • 1.0.5: Completely redone.
  • 0.23.3: Sprite changed.
  • 0.20.0: Revamped.
  • 0.10.0: Introduced.
Characters: Pumpfly.png Pre-Hardmode Enemies • Primordial Thrall.png Hardmode Enemies • Furia.png Post-Moon Lord Enemies • Blaze.png Event Enemies
Jensen, the Grand Harpy.png Bosses Nuba (friendly).png Friendly NPCs