Storm Weaver

Type	Boss – Burrowing Enemy
Damage	240 / 360 / 396 / 432 / 720
Max Life	825,000 / 1,320,000 / 1,683,000
Defense	150
DR	99.99%
KB Resist	100%
Inflicts debuff	Electrified 100% chance;
Debuff duration	4 seconds
Debuff tooltip	Moving hurts!

Type	Boss – Burrowing Enemy
Environment	Space
Max Life	742,500 / 825,000; 1,188,720 / 1,320,000 ; 1,584,960 / 1,683,000
KB Resist	100%
Immune to
Cold	-
Water	-
Sickness	-
Electricity	Resistant
Heat	-
Coins	2

Type	Boss – Burrowing Enemy
Environment	Space
Max Life	825,000 / 1,320,000 / 1,683,000
KB Resist	100%
Immune to
Cold	-
Water	-
Sickness	-
Electricity	Resistant
Heat	-

"This beast, while of lesser stature than the Devourer, is a great danger in its own right."

Storm Weaver is a post-Moon Lord boss and is one of the Rune of Kos bosses. It drops Armored Shells, which are a crafting material that can be used to craft the Cosmic Worm.

Spawn

The Storm Weaver does not spawn on its own and requires the player to summon it with the Rune of Kos, causing it to rain. It must be summoned in the Space layer.

Segments

Phase 1

Storm Weaver BodyArmored

Statistics

Type	Boss – Burrowing Enemy
Damage	125 / 192 / 224 / 256 / 372 (Contact) 140 / 240 / 264 / 288 / 420 (Electric Laser)
Max Life	825,000 / 1,320,000 / 1,683,000
Defense	150
DR	99.99%
KB Resist	100%
Inflicts debuff	Electrified 100% chance
Debuff duration	2 seconds (Contact) 1 second (Electric Laser)
Debuff tooltip	Moving hurts!

Sounds

Hurt

Storm Weaver TailArmored

Statistics

Type	Boss – Burrowing Enemy
Damage	105 / 160 / 192 / 224 / 312 (Contact) 150 / 264 / 288 / 312 / 450 (Lightning Orb)
Max Life	825,000 / 1,320,000 / 1,683,000
Defense	0
KB Resist	100%
Inflicts debuff	Electrified 100% chance
Debuff duration	2 seconds (Lightning Orb) 1 second (Contact)
Debuff tooltip	Moving hurts!

Sounds

Hurt

Phase 2

Storm Weaver HeadUnarmored

Statistics

Type	Boss – Burrowing Enemy
Damage	240 / 360 / 396 / 432 / 720 (Contact) 150 / 264 / 288 / 312 / 450 (Lightning, Frost Wave) 160 / 276 / 304 / 332 / 480 (Tornado)
Max Life	742,500 / 825,000 1,188,720 / 1,320,000 1,584,960 / 1,683,000
Defense	20
DR	20%
KB Resist	100%
Inflicts debuff	Electrified 100% chance
Debuff duration	4 seconds (Charge) 2 seconds (Contact) 2 seconds (Lightning)
Debuff tooltip	Moving hurts!

Sounds

Lightning Charge

Frost Wave

Tornado

Storm Weaver BodyUnarmored

Statistics

Type	Boss – Burrowing Enemy
Damage	125 / 192 / 224 / 256 / 372
Max Life	742,500 / 825,000 1,188,720 / 1,320,000 1,584,960 / 1,683,000
Defense	30
DR	30%
KB Resist	100%
Inflicts debuff	Electrified 100% chance
Debuff duration	2 seconds (Charge) 1 second (Contact)
Debuff tooltip	Moving hurts!

Storm Weaver TailUnarmored

Statistics

Type	Boss – Burrowing Enemy
Damage	105 / 160 / 192 / 224 / 312
Max Life	742,500 / 825,000 1,188,720 / 1,320,000 1,584,960 / 1,683,000
Defense	40
DR	40%
KB Resist	100%
Inflicts debuff	Electrified 100% chance
Debuff duration	1 second (Charge) 0.5 seconds (Contact)
Debuff tooltip	Moving hurts!

Behavior

The Storm Weaver is an aerial worm-like enemy with 31 / 41 / 51 / 61 segments in total. It actively chases the player throughout the battle and does not enrage, even if the player leaves the Space layer. When spawned, it will start raining.

Attacks

Phase 1

The body and head are nearly immune to all damage; the only way to deal significant damage is to hit its tail, which has 0 defense, glows, makes a different hit sound from other segments, and its damage taken is multiplied by 2.
Fires an even barrage of 10 Electric Lasers from its body segments and summons a Lightning Orb from its tail segment every 5 seconds.

Phase 2

Transitions to Phase 2 at 80% health.
Sheds its armor, causing the entire body to be vulnerable.
Increased overall speed and acceleration by 20%.
Every 6.67 / 6 / 5.67 / 5.33 seconds, its color shifts to a dark blue color and quickly charges at the player, summoning three bolts of lightning from the sky in the process. Its color shifts back to normal after performing the attack.

Phase 3

Transitions to Phase 3 at 55% health.
Causes a blizzard to occur in addition to the rain.
Charges half as frequently for the remainder of the battle, and no longer summons lightning when charging.
During 25% of its charge downtime, it summons an even row of 23 / 25 fast and harmless frost clouds. After half a second has passed, Frost Waves rain down in the positions of the frost clouds.

Phase 4

Transitions to Phase 4 at 30% health.
Causes a thunderstorm to occur in addition to the rain and blizzard.
Loses the ability to charge at the player.
Summons 2 additional Frost Waves with 7% less spacing.
Replaces every other Frost Mist attack with 3 / 5 / 7 even columns of tornadoes. Tornadoes last for 20 seconds before disappearing.

In Expert Mode

Increased segment count to 41 and size increased by 10%.
Gains 10% increased velocity and 20% increased acceleration.
Charges 10% more frequently, and charges 10% more frequently at 50% health.
Gains a variation of the Frost Wave attack which has an alternating pattern.
Spawns 5 tornadoes in total with 14.29% less spacing.

In Revengeance Mode

Increased segment count to 51 and size increased by 5%.
Gains 5% increased velocity and 20% increased acceleration.
Charges 5% more frequently, and charges faster as health lowers and its distance to the player.
Types of Frost Wave attacks are randomized between an even rain, an alternating pattern, or a rain that start from the edges and move towards the center.
Spawns 7 tornadoes in total with 14.29% less spacing.
Lightning bolts resulting from charge attacks are 14.29% faster.

In Death Mode

Increased segment count to 61 and size increased by 5%.
Charges 5% more frequently.
Rains 2 additional Frost Waves with 7% less spacing than in Classic Mode.

In Boss Rush

Size increased by 5%.
Gains 15% increased velocity and 20% increased acceleration.
Charges 10% more frequently.
Spawns projectiles 33.33% more frequently during the first phase.

On the For the worthy seed

Gains 1.4x the speed and acceleration, multiplicative of world difficulty.
Size is decreased to 0.7x, multiplicative of world difficulty.

Resistances

All Phase 2 Storm Weaver segments take reduced damage from non-minion piercing projectiles. Projectile damage is divided by the number of times it pierces and infinite piercing deals 50% damage.
On top of this, all segments take:
- 75% damage from the Molten Amputator's globs.
- 50% damage from the Pristine Fury's alt fire, Elemental Axe and Dazzling Stabber Staff, Tactician's Trump Card explosion, and true melee hits.

Tips

For more elaborate strategies on defeating Storm Weaver, including weapon and arena recommendations, see Guide:Storm Weaver strategies.

Stay on the ground and don't panic if you're almost dead. Panicking will often lead to you trying to outrun the Weaver, which is not possible.
Gravistar Sabaton can help you fall faster, helping to kite the boss and avoid its head.
Mobility is the key to this battle. Although it is hard to outrun the Weaver, using dash abilities or the Rod of Discord or Normality Relocator can save you from the massive damage caused by its head.
Gravity Normalizer Potions can be used to counteract the low gravity in Space allowing easier maneuverability.
For the first form use piercing weapons and weapons with a large blast radius, as these can help hit the tail of the Weaver. You can easily out-maneuver the first phase with Celestial Tracers by circling around the Storm Weaver while being in space. This method also helps dodge the Weaver's summons and fired laser beams.
The orbs that Storm Weaver fires do not deal contact damage, only the lightning bolts themselves.
Homing weapons are recommended for Phase 1 as they can easily hit the tail.
The Elemental Shiv is recommended for this fight due to the homing capabilities and the amount of projectiles it produces.
The Telluric Glare does good damage to Phase 2 with its piercing and ignoring immunity frames.
Nuclear Fury is an excellent choice with homing capabilities allowing it to easily hit the tail in Phase 1 and swarm weaver with typhoons in Phase 2.
The Shattered Sun does good in Phase 1 as it homes in on the tail, but Molten Amputators excel in Phase 2.
Elemental Axes are an excellent choice quickly dispatching the Storm Weaver.
While the Storm Weaver can be fought before any other post-Moon Lord boss, it is recommended to fight it after Providence has been defeated, as its fast speed and high damage can make the fight very challenging.

Trivia

The Bestiary entry for the Storm Weaver: "An invasive pest from another dimension crowned by many as king of the skies, soaring across the upper atmosphere at near unmatched speed. Unlike the other beings from the Distortion, the Storm Weaver lacks higher purpose, feasting upon the remnants of the civilization that once dwelled in the skies."

Storm Weaver's theme is a segment from Servants of the Scourge, which was composed by the artist DM DOKURO.
- This theme contains a motif from The Devourer of Gods' theme.
According to the lore, while it is commonly thought that the Storm Weaver is the same species as The Devourer of Gods, Draedon confirms that this is false when communicated with.
The Storm Weaver, along with Ceaseless Void and Signus, can be summoned right after the Moon Lord is defeated, as their summoning item only requires Solar Fragments, Luminite Bars, and Unholy Essences.
If the Boss Checklist Mod is installed, its unique despawn message will be "Storm Weaver hides itself within the fierce anvilhead clouds."

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:
- Now properly scales health in Master Mode. This should result in lower health overall.
- Buffed head damage from 180 / 360 / 396 / 418 / 540 to 240 / 360 / 396 / 432 / 720 , body damage from 120 / 192 / 224 / 250 / 330 to 125 / 192 / 224 / 256 / 372 , and tail damage from 100 / 160 / 192 / 210 / 270 to 105 / 160 / 192 / 224 / 312 .
- Buffed laser damage from 140 / 240 / 264 / 280 / 396 to 140 / 240 / 264 / 288 / 420 , lightning and frost wave damage from 150 / 264 / 288 / 300 / 432 to 150 / 264 / 288 / 312 / 450 , and tornado damage from 160 / 276 / 304 / 320 / 456 to 160 / 276 / 304 / 332 / 480 .
- No longer uses a global scaling contact damage formula based on boss velocity. Instead, it now uses a different formula for scaling contact damage based on velocity, which scales from half damage to full damage on the head, and 0 to full damage on the body and tail.
- Added new sounds for armor shedding and death.
- Body and tail are no longer immune to lifesteal.

2.0.3.005: Fixed him resisting Pristine Fury's primary fire instead of its alternate fire.

2.0.3.003:
- Decreased Electrified duration from head from 4 seconds to 2, from body from 2 seconds to 1, and from tail from 1 second to 0.5.
- Decreased Electrified duration while charging from head from 8 seconds to 4, from body from 4 seconds to 2, and from tail from 2 seconds to 1.
- Reduced potential lag during the fight.

2.0.3.001:
- Nerfed health from 825,500 / 1,320,800 / 1,981,200 to 825,000 / 1,320,000 / 1,980,000 .
- No longer takes 20% damage from Alpha Virus' main cell.

2.0.2.002:
- Increased Boss Checklist Mod difficulty value from 19.51 to 19.61.
- Changed Boss Checklist Mod despawn message from "Storm Weaver hid itself once again within the stormfront." to "Storm Weaver hides itself within the fierce anvilhead clouds."
- Now properly displays vanilla debuff colors and Hunter Potion effects.

2.0.1.003:
- Now uses its respective spawning sound instead of Boss Rush summoning sounds during Boss Rush.
- No longer causes rain to occur while summoned and during Boss Rush.
- Buffed Boss Rush health from 475,000 / 760,000 / 1,140,000 to 500,000 / 800,000 / 1,200,000 .

2.0.1.002:
- Added boss spawning sound.
- No longer has a global grenade resistance.
- No longer fires lightning in the third phase. Changed phase transition from 65% to 55%.
- No longer charges in the fourth phase. Changed phase transition from 50% to 30%.

2.0.1.001:
- Increased the distance between Frost Waves and Tornado projectiles in all modes.
- Now drops 5-7 Armored Shells instead of 5-8.
- Treasure Bag now drops 6-9 Armored Shells instead of 7-10 .

2.0.0.001: Fixed an issue that prevented Treasure Bags from dropping vanilla developer items.

1.5.1.003:
- Now drops 2 .
- Head and body segments are no longer invulnerable during its first phase.

1.5.1.001:
- Now smoothly transitions between colors after the charge attack.
- Increased speed while despawning by 200%.
- Buffed phase 1 head defense from 0 to 150.
- Buffed phase 2 head defense from 0 to 15, and damage reduction from 0% to 10%.
- Buffed phase 2 tail defense from 0 to 45, and damage reduction from 0% to 30%.
- Buffed size modifier in Malice Mode or Boss Rush from 120% to 125%.
- Now resistant to electricity debuffs in phase 1, and vulnerable to cold, sickness, and heat debuffs, but resistant to electricity debuffs in phase 2.

1.5.0.001:
- Phase 1 is now immune to all debuffs.
- Phase 2 is no longer immune to any debuffs except Confused, Pearl Aura, and Electrified.
- Now uses one entity to make up its two phases. It will transition into its second phase at 90% health.
- Nerfed total health from 1,000,000 / 1,600,000 to 825,500 / 1,320,800 .
- Nerfed Boss Rush health from 3,670,000 / 5,872,000 to 475,000 / 760,000 .
- Phase 1 Tail now has a rainbow glowmask.
- Lightning will now flash in the background before lightning projectiles spawn.
- Distance offsets when spawning lightning orbs are no longer random.
- Phase 2 reactive damage reduction effectiveness is now increased by 100% before defeating The Devourer of Gods.
- No longer takes 90% damage from Shattered Sun and 10% damage from Stardust Dragon Staff's minion.
- Now drops its own Treasure Bag in Expert Mode or higher.
- Phase 1 now inflicts Electrified for 1.5 seconds from the body, and 1 second from the tail.
- Phase 2 head now inflicts Electrified for 3 seconds instead of 1.5 in Revengeance Mode.
- Phase 2 now inflicts Electrified for 1.5 seconds from the body, and 1 second from the tail.
- Can no longer spawn twice during Boss Rush.
- Now drops Supreme Healing Potions.

1.4.5.006:
- Phase 1 no longer deletes infinitely piercing projectiles.
- Now takes 40% damage from Wave Pounder's projectiles during phase 2.
- Phase 2 lightning now always comes from the direction it is charging from.
- Now has increased player tracking while charging.

1.4.5.003:
- Buffed phase 2's head damage from 180 / 360 / 396 / 417 to 180 / 360 / 396 / 418 .
- Changed phase 1 body damage from 100 / 170 to 100 / 160 / 192 / 208 , and phase 2 body damage from 120 / 204 to 120 / 192 / 224 / 250 .
- Changed phase 1 tail damage from 80 / 136 to 80 / 128 / 160 / 176 , and phase 2 tail damage from 100 / 170 to 100 / 160 / 192 / 210 .
- Buffed lightning damage from 150 / 248 to 150 / 264 / 288 / 300 .
- Lightning portals now spawn much closer to the player.
- Now larger and longer in Death Mode.

1.4.5.001:
- Removed its enrage.
- Now moves faster the farther it is from the player.
- Now has a charging attack in Revengeance and Death Mode.

1.4.4.002: Now takes 10% damage from Stardust Dragon Staff's minion.

1.4.4.001: Buffed phase 2's health from 600,000 / 960,000 to 900,000 / 1,440,000 .

1.4.3.001:
- Nerfed phase 1 head damage from 140 / 280 / 350 / 402 to 140 / 280 / 308 / 324 .
- Nerfed phase 1 body damage from 100 / 170 / 195 to 100 / 170 .
- Nerfed phase 1 tail damage from 80 / 136 / 156 to 80 / 136 .
- Nerfed phase 2 head damage from 180 / 360 / 450 / 517 to 180 / 360 / 396 / 417 .
- Nerfed phase 2 body damage from 120 / 204 / 234 to 120 / 204 .
- Nerfed phase 2 tail damage from 100 / 170 / 195 to 100 / 170 .
- Nerfed lightning damage from 150 / 248 / 285 to 150 / 248 .
- Changed hit sound for tail.
- Now takes 90% damage from Shattered Sun's homing daggers.
- Now takes 75% damage from Molten Amputator, limits stealth strike boomerang pierce to 5, and limits regular boomerang pierce to 8.
- Now takes 50% damage from Elemental Axe.
- Resprited it, gores, and map icon. Previous sprites were

1.4.2.106:
- Buffed Boss Rush health from 5,280,000 to 5,600,000 .
- Buffed phase 1's body damage from 160 to 170 , and tail damage from 128 to 136 .
- Buffed phase 2's body damage from 192 to 204 , and tail damage from 160 to 170 .
- Buffed lightning damage from 140 / 200 to 150 / 248 .
- Phase 1's head and body segments now take low amounts of damage instead of setting all damage to zero, nerfed both of their defenses from 99,999 to 0 and 1 respectively.

1.4.2.105: Decreased how often it fires lightning in Revengeance Mode and lower.

1.4.2.104:
- Increased phase 2's Death Mode and Boss Rush segment count from 32 to 42.
- Projectiles which can pierce more than 4 times and don't pierce infinitely will now have their damage divided by the amount of times they pierce on phase 2's body segments.
- Minions now deal full damage to Storm Weaver.
- Phase 1's tail now shares its damage resistance formula with phase 2's segments.
- No longer starts Rain during The Devourer of Gods fight.
- Decreased phase 2's movement speed.
- No longer enrages when brought out of Space during The Devourer of Gods fight.
- Increased enraged movement speed.

1.4.2.103: Reworked how movement works.

1.4.2.102:
- Buffed phase 2's health from 300,000 / 480,000 to 600,000 / 960,000 , health during The Devourer of Gods fight from 50,000 / 80,000 to 100,000 / 160,000 , and Boss Rush health from 2,300,000 / 3,680,000 to 3,300,000 / 5,280,000 .
- Both phases now have the ability to summon direct lightning strikes.
- Now starts Rain while alive.
- Now despawns quicker, and will travel upwards instead of downwards.
- Increased Death Mode and Boss Rush segment lengths from 7 to 22.
- Removed phase 1's tail's resistances.

1.4.2.101:
- Now immune to Cursed Inferno.
- Now enrages when brought out of Space.

1.4.2.001:
- Nerfed phase 2's Boss Rush health from 4,500,000 / 7,200,000 to 2,300,000 / 3,680,000 .
- Nerfed phase 2's health during the Devourer of Gods fight from 100,000 / 160,000 / 120,000 to 50,000 / 80,000 .
- Phase 2 now has afterimages.
- Body and tail segments can no longer be lifestealed off of.
- No longer drops items during the Devourer of Gods fight.

1.4.1.003:
- Phase 1 no longer drops any money.
- Increased phase 2 minimum coin drop amount from 30 to 35 .

1.4.1.001:
- Buffed phase 2's Boss Rush health from 3,000,000 / 4,800,000 to 4,500,000 / 7,200,000 .
- No longer takes 12.5% damage from Crystal Bullet shards, Holy Arrow stars, split Terra Arrows, and split Terra Bullets.
- No longer takes 50% damage from ranged projectiles while Vortex armor's stealth ability is active.
- Both phases now have gores.

1.3.4.101:
- First phase now has gores.
- Resprited second phase gores.

1.3.4.001: Head and tail segments for both phases now take 50% damage if the player has Vortex armor stealth active and 12.5% damage from Crystal Bullet shards, Holy Arrow stars, split Terra Arrows, and split Terra Bullets.

1.3.3.011: Resprited. Previous sprites were

1.3.3.002: Second phase is now invincible for 3 seconds after spawning.

1.3.3.001:
- Decreased segment count in both phases from 52 to 32.
- Phase 1's head can no longer be targeted by homing weapons and minions.
- No longer enrages when outside of Space.
- Tweaked phase 2's movement.

1.3.2.001:
- Nerfed phase 1's head damage from 150 / 300 to 140 / 280 , and phase 2's head damage from 250 / 500 to 180 / 360 .
- Nerfed phase 2's body damage from 150 / 240 to 120 / 192 .
- Buffed phase 1's tail damage from 75 / 120 to 80 / 128 , and phase 2's tail damage from 95 / 152 to 100 / 160 .
- Nerfed lightning portal damage from 120 / 180 to 50 / 70 .
- Now drops weapons per player instead of only once.

1.3.0.001:
- Buffed phase 1's head damage from 120 / 240 to 150 / 300 .
- Buffed phase 2's head damage from 200 / 400 to 250 / 500 .
- Adjusted phase 2's speed.
- Body segments can no longer be homed in on in both phases.
- Now uses Servants of the Scourge as theme instead of Boss 3.

1.2.4.101:
- Reduced phase 2 segment count in Death Mode from 10 to 5.
- Phase 1's tail now takes 3x more damage from all sources in Death Mode instead of 10x.

1.2.4.002: Now summons lightning orbs.

1.2.3.004:
- Second phase now lowers its segment count to 12 in Death Mode.
- Second phase now always chases the player in Death Mode.

1.2.2.001:
- Decreased segment count in both phases by 10.
- Phase 1's tail now takes 10x damage instead of 5x.

1.2.1.002: Can now despawn if the player is too far away.

1.2.0.002: Body segments are now classified as bosses.

1.2.0.001:
- Now has a cap of 10 Stasis Probes at once instead of 20 in both phases.
- Second phase is no longer immune to Ichor.
- Can now drop Storm Weaver Trophy.
- Now has a 2% chance to drop Laudanum or Stress Pills in Revengeance Mode.
- Resprited map icon for both phases. Previous sprites were

1.1.7.913: Changed how phase 2 spawns.

1.1.7.901:
- Buffed phase 1's health from 120,000 to 160,000 .
- Nerfed phase 1's head contact damage from 150 / 300 to 120 / 240 , buffed body contact damage from 140 to 160 , and buffed tail contact damage from 97 to 120 .
- Buffed phase 2's health from 360,000 to 480,000 .
- Nerfed phase 2's head contact damage from 250 / 450 to 200 / 400 , buffed body contact damage from 195 to 240 , and buffed tail contact damage from 123 to 152 .
- Can now only spawn up to 20 Stasis Probes at a time.
- Both phases' body segments no longer produce dust when hit.
- Resprited. Previous sprites were

1.1.7.851:
- Changed movement.
- Now drops 5-8 Armored Shells instead of 3-4.

1.1.7.807: Phase 1 body segments now force all damage taken to 1 instead of 0.

1.1.7.806: Body segments now take 0 damage from all sources.

1.1.7.801:
- Both phases now use an immunity frame cooldown slot of 1 instead of the default 0.
- Phase 1's head and body segments now force all damage taken to them to 0.

1.1.7.56: Fixed a bug where finishing the first phase would internally mark the boss as defeated.

1.1.7.55:
- Phase 1's body segments each now have a 6.67% chance to spawn a Stasis Probe when hit instead of a 10% chance, and phase 2's body segments now spawn a Stasis Probe after every 14 hits instead of 7.
- Resprited its tail. Previous sprite was

1.1.7.51: Now despawns twice as quickly.

1.1.7.5: Now despawns twice as quickly.

1.1.7.2:
- Now has a map icon.
- Fixed it not spawning servants correctly in multiplayer.

1.1.7: Introduced.

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In other languages

Storm Weaver

Contents

Spawn

Segments

Phase 1

Phase 2

Behavior

Attacks

Phase 1

Phase 2

Phase 3

Phase 4

In Expert Mode

In Revengeance Mode

In Death Mode

In Boss Rush

On the For the worthy seed

Resistances

Tips

Trivia

History

Navigation menu

Namespaces

Views

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Navigation

Resources

Items

Characters

Portals

Tools

In other languages

Storm Weaver

Spawn

Segments

Phase 1

Phase 2

Behavior

Attacks

Phase 1

Phase 2

Phase 3

Phase 4

In Expert Mode

In Revengeance Mode

In Death Mode

In Boss Rush

On the For the worthy seed

Resistances

Tips

Trivia

History