Calamity Mod Wiki
Advertisement
For the mini boss, see Eidolon Wyrm.

The Adult Eidolon Wyrm is a Superboss battled in the 4th layer of the Abyss. While it can be summoned at any time, it is intended to be fought after both the Exo Mechs and Supreme Calamitas have been defeated.

Its only unique drop is the Halibut Cannon, a powerful endgame gun.

Spawn[]

The Adult Eidolon Wyrm does not spawn on its own and will spawn at any time if a player is affected with the Chaos State debuff (given by Rod of Discord, Normality Relocator, and similar items) while in any layer of the Abyss.

When spawned, the Adult Eidolon Wyrm will cause the world to rain.

Segments[]

Adult Eidolon Wyrm Head
Adult Eidolon Wyrm Head.png
Statistics
TypeSuperbossBurrowing Enemy
EnvironmentAbyss
AI TypeAdult Eidolon Wyrm AI
Damage400 / 800 / 850 / 880(Contact)
500 / 752 / 788 / 808 (Lightning)
400 / 600 / 632 / 648 (Ice Mist)
400 / 600 / 632 / 648 (Ancient Doom)
Defense100
DR40%
KB Resist100%
Adult Eidolon Wyrm Body
Adult Eidolon Wyrm Body.png
Statistics
TypeSuperbossBurrowing Enemy
EnvironmentAbyss
AI TypeAdult Eidolon Wyrm AI
Damage0 (Contact)
360 / 540 / 630 / 675 (Ancient Light)
Defense0
DR0%
KB Resist100%
Inflicts debuffHoly FlamesHoly Flames
100% chance
Debuff duration3 seconds (Ancient Light)
Debuff tooltipDissolving from holy light
Eidolon Wyrm BodyAlternate
Adult Eidolon Wyrm Body (alternate).png
Statistics
TypeSuperbossBurrowing Enemy
EnvironmentAbyss
AI TypeAdult Eidolon Wyrm AI
Damage0 (Contact)
400 / 600 / 632 / 648 (Shadow Fireball)
Defense0
DR0%
KB Resist100%
Inflicts debuffShadowflameShadowflame
100% chance
Debuff duration2 seconds (Ancient Doom)
Debuff tooltipLosing life
Adult Eidolon Wyrm Tail
Adult Eidolon Wyrm Tail.png
Statistics
TypeSuperbossBurrowing Enemy
EnvironmentAbyss
AI TypeAdult Eidolon Wyrm AI
Damage0
Defense0
DR0%
KB Resist100%

Behavior[]

The Adult Eidolon Wyrm is an aerial worm-like enemy with 42 segments in total. Its body and tail segments can neither take damage nor deal contact damage. Additionally, the head cannot take damage or deal contact damage unless it is fully visible. It performs a variety of attacks on a cycle, which changes slightly based on each phase transition. When transitioning between phases, the wyrm will choose the next attack in its next phase's cycle. Upon contact with the head, the player is inflicted with the Crush Depth debuff for 10 seconds.

While it can be spawned in any layer of the Abyss, it will enrage outside of the 4th layer. When enraged, the wyrm moves and spins faster, lightning bolts and Ice MistIce Mists are more predictive, and 2 extra EidolistEidolists and Ancient DoomAncient Dooms are summoned in their respective attacks.

Phase 1[]

  • Performs the following attacks in a cycle:
    • Teleports, roars, turns visible, accelerates towards the player for 5 / 4 / 3.5 / 3 / 2 seconds with very precise turn speeds, then moves away and fades out. It charges three times before transitioning into the next attack.
    • For 3 / 2.5 seconds, summons three lightning bolts from the sky every 0.5 seconds. One lightning bolt aims ahead of the player, one lightning bolt aims directly at the player, and the other aims behind the player. During this attack, the wyrm itself flies upwards and stays invisible.
    • Charges at the player once in a similar manner to the Charge Combo, although with 1.5x the speed.
    • Summons an Eidolon WyrmEidolon Wyrm if there are none alive, accompanied by a sound effect. During this attack, the wyrm itself flies downwards. It transitions into the next attack after 3 / 2.5 / 2.25 / 2 / 1.5 seconds.
    • Performs another Charge Combo attack.
    • For 3 / 2.5 seconds, summons three homing Ice MistIce Mists from below every 1 second. One mist aims ahead of the player, one mist aims directly at the player, and the other aims behind the player. During this attack, the wyrm itself flies downwards and stays invisible.
      • Ice Mists inflict Chilled for 3 seconds and Frozen for 1.5 seconds.
    • Performs another Fast Charge attack.
    • Summons 3 / 4 / 5 / 6 / 7 EidolistEidolists if there are none alive, accompanied by a sound effect. During this attack, the wyrm itself flies downwards. It transitions into the next attack after 3 / 2.5 / 2.25 / 2 / 1.5 seconds.

Phase 2[]

  • Transitions at 80% health.
  • The second charge of the first Charge Combo in the attack cycle is replaced. Instead, the wyrm spins around the player and fires projectiles from its body segments for 5 / 4.5 / 4.25 / 4 / 3.5 seconds before transitioning into the next attack.

Phase 3[]

  • Transitions at 60% health.
  • The second charge of the second Charge Combo in the attack cycle is replaced. Instead, the wyrm summons a ring of 4 / 5 / 6 / 7 / 8 Ancient DoomAncient Dooms which orbit around the player before bursting into four Prophecy's EndProphecy's End in each cardinal direction. After 2 / 1.75 / 1.67 / 1.58 / 1.33 seconds, another ring appears until three rings have appeared in which it will transition into the next attack.
    • While performing this attack, the wyrm itself flies upwards and stays invisible.
    • The Ancient Doom ring has a radius of 37.5 / 34.38 / 33.44 / 32.5 / 30 tiles from the player.
    • Ancient Dooms and their projectiles inflict Shadowflame for 2 seconds.

Phase 4[]

  • Transitions at 40% health.
  • The final charge of both Charge Combo attacks in the attack cycle are replaced. Instead, the wyrm accelerates towards the player for 3 / 2.5 / 2.25 / 2 / 1.5 seconds. Then, it teleports, roars, fades in, charges to the left or right of the player, summons a wall of 4 / 6 / 8 / 10 / 12 lightning bolts from the direction of the charge towards the player, and then fades out.

Phase 5[]

  • Transitions at 20% health.
  • Performs Fast Charge attacks instead of spawning Eidolists and Eidolon Wyrms.

Phase 6[]

  • Transitions at 5% health.
  • For the remainder of the fight, it becomes immune to most slowing or freezing debuffs including Eutrophication, Exo Freeze, Galvanic Corrosion, Glacial State, Kami Flu, Slow, Temporal Sadness, Time Distortion, Vaporfied, and Webbed.
  • Replaces all previous attacks with one final attack, combining the elements of the Firing Spin and Ancient Doom Ring attacks. The wyrm itself alternates between flying upwards for a very short time and spinning around the player.
    • A ring of 4 / 5 / 6 / 7 / 8 Ancient DoomAncient Dooms is summoned every 2 / 1.75 / 1.67 / 1.58 / 1.33 seconds.
    • 10 main segments simultaneously fire Ancient LightAncient Light every 2 / 1.83 / 1.75 / 1.67 / 1.5 seconds.
    • 20 alternate segments simultaneously fire Shadow FireballShadow Fireball every 1.5 / 1.33 / 1.25 / 1.17 / 1 seconds.

In Expert Mode[]

  • Moves and charges faster with a greater predictiveness.
  • Lightning bolts and Ice Mists travel faster.
  • Ancient Dooms spawn closer to the player.
  • Takes less time to perform most attacks excluding Lightning Rain and Ice Mist Barrage attacks.
  • Summons more Eidolists, Ancient Dooms, and lightning bolts during the Lightning Charge attacks.

In Revengeance Mode[]

  • Moves and charges faster with a greater predictiveness.
  • Lightning bolts and Ice Mists travel faster.
  • Ancient Dooms spawn closer to the player.
  • Takes less time to perform most attacks excluding Lightning Rain and Ice Mist Barrage attacks.
  • Summons more Eidolists, Ancient Dooms, and lightning bolts during the Lightning Charge attacks.

In Death Mode[]

  • Moves and charges faster with a greater predictiveness.
  • Lightning bolts and Ice Mists travel faster.
  • Ancient Dooms spawn closer to the player.
  • Takes less time to perform most attacks excluding Lightning Rain and Ice Mist Barrage attacks.
  • Summons more Eidolists, Ancient Dooms, and lightning bolts during the Lightning Charge attacks.

In Malice Mode[]

  • Moves and charges faster with a greater predictiveness.
  • Lightning bolts and Ice Mists travel faster.
  • Ancient Dooms spawn closer to the player.
  • Takes less time to perform all attacks.
  • Summons more Eidolists, Ancient Dooms, and lightning bolts during the Lightning Charge attacks.

Notes[]

  • The Adult Eidolon Wyrm's awakening depends only on whether or not the player has the Chaos State debuff while in the Abyss, and will therefore spawn if the player enters the biome with the debuff already applied, even if the Rod of Discord or other items which inflict Chaos State are not actually being used within the Abyss.
    • As a result, if the player has the Chaos State debuff and is in the Abyss when they kill the Adult Eidolon Wyrm, it will immediately respawn.
  • The Adult Eidolon Wyrm does not require Polterghast to be defeated in order to drop weapons. This means that, if the player has the strategy and the patience to do so, they can acquire those immensely powerful weapons only after obtaining a Rod of Discord at the beginning of Hardmode.
  • Enemies spawned by the Adult Eidolon Wyrm do not drop items or coins.

Trivia[]

  • The Adult Eidolon Wyrm's theme is Threats of the Ocean Floor, which was made by the artist DM DOKURO.
    • If the Calamity Music add-on mod is disabled, Boss 3 will play instead.
  • An eidolon in Greek Literature is a spirit-like image of a person, either living or dead.
  • Its ice and lightning attacks are similar to those performed by the Lunatic Cultist. As well as "Eidolon" being a term used to describe something idolized (potentially in the fashion of a cult), this further establishes a connection between these enemies.
    • It may also be related to the Eidolist, as they have similar names and both spawn in the Abyss.
  • Its design is based on a creature from the aquatic exploration game Subnautica, known as the Ghost Leviathan. The original sprite was also a copy of the Ghost Leviathan's design.
    • The different life-stages makes this more evident, as there are both juvenile and adult Ghost Leviathans.
    • The Adult versions of both creatures share the similar purpose of preventing the player from doing something (Adult Ghost Leviathans protect the crater edge, while the Adult Eidolon Wyrm prevents the player from using the Rod of Discord or other short ranged teleportation items).
  • The Adult Eidolon Wyrm is a "Superboss" in this mod. In some RPG games, superbosses are extremely powerful enemies that are very challenging even if the player has endgame equipment.
  • The Adult Eidolon Wyrm could be considered the Calamity Mod version of the Dungeon Guardian since both are extremely strong enemies that are intended to prevent the player from performing a certain action.
  • In previous versions of the mod, the Adult Eidolon Wyrm could spawn at any time in the 3rd and 4th layers of the Abyss after Polterghast had been defeated.
    • Similarly to the Eidolon Wyrm, it would spawn as a passive NPC, and only attack the player if they were affected with the Chaos State debuff, or if it was attacked.
  • Prior to the 1.3.4.001 update, the Adult Eidolon Wyrm had the highest health of any NPC in the mod, with a whopping 30,000,000 / 60,000,000 health.
  • Prior to the 1.5.0.001 update, the Adult Eidolon Wyrm used to be considered a Mini boss.
  • Prior to the 1.5.1.001 update, the Adult Eidolon Wyrm used to be unable to be hurt by any attack that would deal more than 10% of its health in one hit, such as another mod's butcher function or an incredibly powerful weapon. When hit by such an attack, the damage is reduced to 0.
  • If the Boss Checklist Mod is installed, its unique despawn message will be "...".
  • The canonical name for the Eidolon Wyrm is Jared.
Advertisement