Primordial Wyrm

Primordial Wyrm

Map icon

Statistics

Type	Boss – Burrowing Enemy
Environment	Abyss
Max Life	2,500,000 / 4,000,000 / 4,800,000 / 6,000,000 / 7,200,000
KB Resist	100%
Immune to

Resistances

Cold	-
Water	Resistant
Sickness	Vulnerable
Electricity	Vulnerable
Heat	Resistant

Drops

Coins	10

• Item (Quantity)Rate
• Voidstone (80-100)
  100%
• Ectoplasm(After defeating
  Plantera) (21-32)
  100%
• Lumenyl(After defeating
  Leviathan and Anahita) (50-108 / 65-135 )
  100%
• Abyss Shell Fossil
  100%
• Eidolic Wail
  100%
• Halibut Cannon
  100%
• Void Edge
  100%
• Omega Healing Potion (5-15)
  100%
• Thank You
  1%

Sounds

Hurt

Killed

Spawn

Charge

Lightning

Eidolon Wyrm Spawn

Eidolist Spawn

The Primordial Wyrm is a hidden boss fought in the Abyss. It is incredibly powerful, with behavior and stats on par with endgame bosses such as Supreme Witch, Calamitas and the Exo Mechs.

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

Spawn

The Primordial Wyrm does not spawn naturally. Instead, it will spawn at any time 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.

In multiplayer, the Primordial Wyrm will only spawn if all players are within the same layer of the Abyss, and at least one of them has the Chaos State debuff.

On a Get fixed boi world, the Primordial Wyrm will spawn anywhere when the player is inflicted with the Chaos State debuff.

Segments

Primordial Wyrm Head

Statistics

Type	Boss – Burrowing Enemy
Damage	400 / 800 / 850 / 880 / 1000 (Contact) 500 / 752 / 788 / 808 / 1182 (Lightning) 400 / 600 / 632 / 648 / 948 (Ice Mist) 400 / 600 / 632 / 648 / 948 (Ancient Doom)
Max Life	2,500,000 / 4,000,000 / 4,800,000 / 6,000,000 / 7,200,000
Defense	100
DR	40%
KB Resist	100%

Primordial Wyrm Body

Statistics

Type	Boss – Burrowing Enemy
Damage	0 (Contact) 360 / 540 / 630 / 675 / 810 (Ancient Light)
Max Life	2,500,000 / 4,000,000 / 4,800,000 / 6,000,000 / 7,200,000
Defense	0
DR	0%
KB Resist	100%
Inflicts debuff	Holy Flames 100% chance
Debuff duration	3 seconds (Ancient Light)
Debuff tooltip	Dissolving from holy light

Primordial Wyrm BodyAlternate

Statistics

Type	Boss – Burrowing Enemy
Damage	0 (Contact) 400 / 600 / 632 / 648 / 948 (Shadow Fireball)
Max Life	2,500,000 / 4,000,000 / 4,800,000 / 6,000,000 / 7,200,000
Defense	0
DR	0%
KB Resist	100%
Inflicts debuff	Shadowflame 100% chance
Debuff duration	2 seconds (Shadow Fireball)
Debuff tooltip	Losing life

Primordial Wyrm Tail

Statistics

Type	Boss – Burrowing Enemy
Damage	0
Max Life	2,500,000 / 4,000,000 / 4,800,000 / 6,000,000 / 7,200,000
Defense	0
DR	0%
KB Resist	100%

Behavior

The Primordial 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. It performs a variety of attacks on a cycle that changes slightly with each phase transition, quickly chasing players and attempting to ram them while not using any attacks. 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 Mists are more predictive, 1 extra Eidolist and 2 extra Ancient Dooms are summoned in their respective attacks, and it will periodically use a telekinetic attack that yanks the player towards its head, accompanied by a loud sound and a burst of blue sparks.

Phase 1

• Performs the following attacks in a cycle:
  • Quickly moves away from the player, roars, and charges at the player for 5 / 4 / 3.5 / 3 seconds, sharply homing in on their position. It charges three times before transitioning into the next attack.
  • For 3 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.
    • Lightning bolts inflict Electrified for 2 seconds.
  • Charges at the player once in a similar manner to the Charge Combo, although with 1.5x the speed.
  • Summons an Eidolon 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 seconds.
  • Performs another Charge Combo attack.
  • For 3 seconds, summons three homing Ice 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.
    • Ice Mists inflict Chilled for 3 seconds and Frozen for 1.5 seconds.
  • Performs another Fast Charge attack.
  • Summons 3 / 4 / 5 / 6 Eidolists 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 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 seconds before transitioning into the next attack.
  • During this attack, the wyrm itself temporarily becomes immune to most slowing or freezing debuffs including Eutrophication, Galvanic Corrosion, Glacial State, Kami Flu, Slow, Temporal Sadness, Time Distortion, Vaporfied, and Webbed.
  • 10 main segments simultaneously fire Ancient Light every 2 / 1.83 / 1.75 / 1.67 seconds.
  • 20 alternate segments simultaneously fire Shadow Fireball every 1.5 / 1.33 / 1.25 / 1.17 seconds.

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 Ancient Dooms which orbit around the player before bursting into four Prophecy's End in each cardinal direction. After 2 / 1.75 / 1.67 / 1.58 seconds, another ring appears until three rings have appeared in which it will transition into the next attack. During this attack, the wyrm itself flies upwards.
  • 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 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 seconds. Then, it repositions to the left or right of the player, roars, and charges while summoning a wall of 4 / 6 / 8 / 10 lightning bolts from the direction of the charge towards the player.

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, 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 Ancient Dooms is summoned every 2 / 1.75 / 1.67 / 1.58 seconds.
  • 10 main segments simultaneously fire Ancient Light every 2 / 1.83 / 1.75 / 1.67 seconds.
  • 20 alternate segments simultaneously fire Shadow Fireball every 1.5 / 1.33 / 1.25 / 1.17 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.

On the For the worthy seed

• Moves 15% faster.
• Takes half as much time to perform Lightning Rain and Ice Mist Barrage attacks.
• Takes a quarter of the time to perform Eidolon Wyrm Spawn attack.

Notes

• The Primordial Wyrm's spawning only depends on whether the player is afflicted with the Chaos State debuff while in the Abyss, so it will 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 Primordial Wyrm, it will immediately respawn.
• The Primordial Wyrm does not require Polterghast to be defeated in order to drop weapons. Although extremely difficult to do so, it can be defeated and its immensely powerful weapons obtained after getting a Rod of Discord at the beginning of Hardmode.
• Enemies spawned by the Primordial Wyrm do not drop items or coins.

Tips

For strategies on defeating the Primordial Wyrm, including weapon and arena recommendations, see Guide:Primordial Wyrm strategies.

Trivia

• The Bestiary entry for the Primordial Wyrm: "The first Wyrm, blessed by the Goddess of Life, held staggering power that surpassed nearly all of its auric brethren. It held a deep hatred for any sign of usurped light, and would have attempted to strike down even the wielder of Primordial Light had they returned to reclaim their artifact. And yet, despite its immense power, it never would have stood a chance."

• The Primordial Wyrm's theme is Threats of the Ocean Floor, which was made by the artist DM DOKURO.
  • The theme was originally intended to be used for the mini boss encounters in the Abyss before being scrapped and repurposed.
  • The sound the Primordial Wyrm makes when summoned resembles the first chord of the theme and was present long before the theme was implemented.
• 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 Primordial Wyrm prevents the player from using the Rod of Discord or other short, ranged teleportation items).
• The Primordial 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 Primordial Wyrm could spawn at any time in the 3rd and 4th layers of the Abyss before Polterghast had been defeated.
• Similar to the Eidolon Wyrm, it spawns 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 2.0.2.001 update, the Primordial Wyrm was considered a "Superboss". After the update, its status was demoted to "Hidden Boss", though functionally it was unchanged.

History

edit

These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.

• 2.0.4.005: Fixed multiplayer desyncs which caused it to appear as only a head.

• 2.0.4.001:
  • Buffed contact damage from 400 / 800 / 850 / 880 / 1000 to 535 / 800 / 850 / 900 / 1596 . Buffed ice mist, ancient doom, and shadow fireball damage from 400 / 600 / 632 / 648 / 948 to 400 / 600 / 632 / 664 / 1200 , and lightning damage from 500 / 752 / 788 / 808 / 1182 to 500 / 752 / 788 / 824 / 1500 .
  • No longer uses a global scaling contact damage formula based on boss velocity.
  • Now drops Abyss Shell Fossil.
  • Now drops Lumenyl and Ectoplasm after defeating Leviathan and Anahita instead of Calamitas Clone.

• 2.0.3.001:
  • Renamed from "Adult Eidolon Wyrm" to "Primordial Wyrm".
  • Added new charging and death sounds.
  • Buffed health from 2,415,000 / 3,864,000 / 4,636,800 / 5,796,000 / 6,955,200 to 2,500,000 / 4,000,000 / 4,800,000 / 6,000,000 / 7,200,000 .

• 2.0.2.002: Now properly displays vanilla debuff colors and Hunter Potion effects.

• 2.0.2.001: Changed Bestiary entry from "Traces of them appear even in records going back to before the Golden Age of Dragons… They may very well be a glimpse into the full potential of nature." to "Traces of them appear even in records as far back as the early Draconic Era... They may very well be a glimpse into the full potential of nature."

• 1.5.1.003:
  • Buffed health from 2,012,500 / 3,220,000 / 3,864,000 to 2,415,000 / 3,864,000 / 4,636,800 .
  • No longer gains 90% damage reduction while outside layer 4 of the Abyss.
  • Can now be damaged while invisible.

• 1.5.1.001:
  • Renamed from "Eidolon Wyrm (adult)" to "Adult Eidolon Wyrm".
  • Nerfed health from 2,100,000 / 3,360,000 / 3,864,000 to 2,012,500 / 3,220,000 / 3,864,000 .
  • No longer reduces the effectiveness of Cursed Inferno's damage reduction loss.
  • No longer immune to damage over 10% of its health.
  • Increased speed while despawning by 50%.
  • Spawns one more Eidolist, two more Ancient Dooms, moves 33.33% faster, and can push the player while enraged.
  • Nerfed speed of charges, lightning strikes, and ice mists while not enraged but buffed the speed while enraged.
  • No longer starts rain when spawned.
  • Now vulnerable to electricity and sickness debuffs, but resistant to water and heat debuffs.
  • Now drops 50-108 / 65-135 Lumenyl at a 100% chance instead of 50-108 at a 100% chance with a 50% chance to drop an extra 15-27 in Expert Mode.

• 1.5.0.002: Fixed a bug that prevented it from being flagged as dead on multiplayer.

• 1.5.0.001:
  • Now classified as a Superboss.
  • Buffed health from 1,000,000 / 2,000,000 to 2,100,000 / 3,360,000 / 3,864,000 .
  • Nerfed head defense from 3000 to 700 and damage reduction from 99.99999% to 40%.
  • AI has been completely overhauled:
    • Now has two phases, each phase will consist of several attacks.
    • Will always chase and occasionally lunge towards the player.
    • In phase 1:
      • After three lunges have been performed lightning projectiles will be rained down on the player.
      • After four lunges are performed, it will spawn in a Eidolon Wyrm.
      • After seven lunges are performed, it will fire three barrages of Ice Mist projectiles from below the player.
      • After eight lunges are performed, it will rapidly dash into the player and spawn in five Eidolists.
      • After nine lunges the counter is reset.
    • At 50% health, it will enter phase 2:
      • After three lunges are performed, it will spin around the player's last position and will consecutively fire shadowflame fireballs towards the center. If the player is not being spun around, these projectiles travel 50% faster.
      • After four lunges are performed, lightning projectiles will be rained down on the player.
      • After seven lunges are performed, it will spawn seven Ancient blasts that will circle the player's last position and explode three times. Each time an ancient blast projectile explodes, it releases four ancient blast shards.
      • After nine lunges are performed, it will again fire three barrages of Ice Mist projectiles from below the player. After nine lunges the counter is reset.
  • AI is now affected by difficulty changes.
  • Now has a map icon.

• 1.4.5.002: No longer drops Lumenyl pre-Calamitas or Ectoplasm pre-Plantera.

• 1.4.5.001:
  • Now picks an area to swim around in when it spawns. Movement has been adjusted to be more natural.
  • Now swims down and despawns after killing the player.

• 1.4.2.108:
  • An audio cue is now played when it targets and attacks a player.
  • Fixed a bug with its multiplayer targeting.

• 1.4.2.101: Now has a immunity frame cooldown slot of 1.

• 1.4.2.002: Increased Halibut Cannon drop rate from 10% to 100% .

• 1.4.1.003: Decreased minimum coin drop amount from 25 to 10 .

• 1.4.1.001:
  • Buffed contact damage from 1100 / 1500 to 1500 / 3000 .
  • No longer inflicts Horror and Marked for Death in Normal and Expert Mode.
  • Ice mists now inflict Frozen, Chilled, and Frostburn.
  • Lightning orbs now inflict Electrified.
  • Now has gores.
  • Resprited. Previous sprite was

• 1.3.4.101: Can now drop 80-101 Voidstone.

• 1.3.4.001:
  • Can now drop Halibut Cannon at a 10% chance.
  • Nerfed health from 30,000,000 / 60,000,000 to 1,000,000 / 2,000,000 .

• 1.3.3.011:
  • No longer produce dust and is no longer slightly transparent.
  • Buffed damage reduction from 50% to 99.9999%.
  • Resprited. Previous sprite was

• 1.3.3.001: Now takes 50% damage from most vanilla minions if the player is wearing Statis' Belt of Curses.

• 1.3.2.001:
  • Buffed health from 3,000,000 / 6,000,000 to 30,000,000 / 60,000,000 , defense from 300 / 600 to 3000 / 6000 , and ice projectile's damage from 240 / 360 / 540 to 300 / 400 / 600 .
  • Can now be detected by the Lifeform Analyser and its upgrades.

• 1.3.1.001:
  • Buffed damage reduction from 40% to 50%.
  • Can no longer naturally spawn if any other Abyss minibosses are currently alive.

• 1.3.0.001: Introduced.