Storm Weaver

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Storm Weaver
Storm Weaver.png
Statistics
TypeBossBurrowing Enemy
EnvironmentSpace
Max Life825,500 / 1,320,800 Expert Mode / 1,981,200 Master Mode
KB Resist100%
Immune toAll debuffs except:
Enraged
Storm WeaverUnarmored
Storm Weaver (Naked).png
Statistics
TypeBossBurrowing Enemy
EnvironmentSpace
Max Life742,500 / 825,500
1,188,720 / 1,320,800 Expert Mode
1,584,960 / 1,981,200 Master Mode
KB Resist100%
Immune toConfusedPearl AuraElectrifiedKami Flu
Drops
Coins 2 Platinum Coin.png
Sounds
Storm Weaver map 2.png
Map Icon

Storm Weaver is a post-Moon Lord boss and is one of the Sentinels of the Devourer. It drops Armored Shells, which are a crafting material required 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 HeadArmored
Storm Weaver Head.png
Statistics
TypeBossBurrowing Enemy
DamageThis attack will cause defense damage on hit. 180 / 360 Expert Mode / 396 Revengeance Mode / 418 Death Mode / 540 Master Mode
Max Life825,500 / 1,320,800 Expert Mode / 1,981,200 Master Mode
Defense150
DR99.99%
KB Resist100%
Inflicts debuffElectrifiedElectrified
100% chance
Debuff duration4 seconds
Debuff tooltipMoving hurts!
Storm Weaver BodyArmored
Storm Weaver Body.png
Statistics
TypeBossBurrowing Enemy
Damage120 / 192 Expert Mode / 224 Revengeance Mode / 250 Death Mode / 330 Master Mode (Contact)
140 / 240 Expert Mode / 264 Revengeance Mode / 280 Death Mode / 396 Master Mode (Electric Laser)
Max Life825,500 / 1,320,800 Expert Mode / 1,981,200 Master Mode
Defense150
DR99.99%
KB Resist100%
Inflicts debuffElectrifiedElectrified
100% chance
Debuff duration2 seconds (Contact)
1 second (Electric Laser)
Debuff tooltipMoving hurts!
Storm Weaver TailArmored
Storm Weaver Tail.png
Statistics
TypeBossBurrowing Enemy
Damage100 / 160 Expert Mode / 192 Revengeance Mode / 210 Death Mode / 270 Master Mode (Contact)
150 / 264 Expert Mode / 288 Revengeance Mode / 300 Death Mode / 432 Master Mode (Lightning Orb)
Max Life825,500 / 1,320,800 Expert Mode / 1,981,200 Master Mode
Defense0
KB Resist100%
Inflicts debuffElectrifiedElectrified
100% chance
Debuff duration2 seconds (Lightning Orb)
1 second (Contact)
Debuff tooltipMoving hurts!

Phase 2

Storm Weaver HeadUnarmored
Storm Weaver Head (Naked).png
Statistics
TypeBossBurrowing Enemy
DamageThis attack will cause defense damage on hit. 180 / 360 Expert Mode / 396 Revengeance Mode / 418 Death Mode / 540 Master Mode (Contact)
This attack will cause defense damage on hit. 150 / 264 Expert Mode / 288 Revengeance Mode / 300 Death Mode / 432 Master Mode (Lightning, Frost Wave)
160 / 276 Expert Mode / 304 Revengeance Mode / 320 Death Mode / 456 Master Mode (Tornado)
Max Life742,500 / 825,500
1,188,720 / 1,320,800 Expert Mode
1,584,960 / 1,981,200 Master Mode
Defense20
DR20%
KB Resist100%
Inflicts debuffElectrifiedElectrified
100% chance
Debuff duration8 seconds (Charge)
4 seconds (Contact)
2 seconds (Lightning)
Debuff tooltipMoving hurts!
Storm Weaver BodyUnarmored
Storm Weaver Body (Naked).png
Statistics
TypeBossBurrowing Enemy
Damage120 / 192 Expert Mode / 224 Revengeance Mode / 250 Death Mode / 330 Master Mode
Max Life742,500 / 825,500
1,188,720 / 1,320,800 Expert Mode
1,584,960 / 1,981,200 Master Mode
Defense30
DR30%
KB Resist100%
Inflicts debuffElectrifiedElectrified
100% chance
Debuff duration4 seconds (Charge)
2 seconds (Contact)
Debuff tooltipMoving hurts!
Storm Weaver TailUnarmored
Storm Weaver Tail (Naked).png
Statistics
TypeBossBurrowing Enemy
Damage100 / 160 Expert Mode / 192 Revengeance Mode / 210 Death Mode / 270 Master Mode
Max Life742,500 / 825,500
1,188,720 / 1,320,800 Expert Mode
1,584,960 / 1,981,200 Master Mode
Defense40
DR40%
KB Resist100%
Inflicts debuffElectrifiedElectrified
100% chance
Debuff duration2 seconds (Charge)
1 second (Contact)
Debuff tooltipMoving hurts!

Behavior

The Storm Weaver is an aerial worm-like enemy with 31 / 41 Expert Mode / 51 Revengeance Mode / 61 Death Mode 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, the Storm Weaver will causes the rain to occur.

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 a even barrage of 10 Electric Lasers from its body segments and summons a Lightning OrbLightning Orb from its tail segment every 5 seconds.

Phase 2

  • Transitions to Phase 2 when below 80% health.
  • Sheds its armor, causing the entire body to be vulnerable.
  • Increased overall speed and acceleration by 20%.
  • Every 6.67 / 6 Expert Mode / 5.67 Revengeance Mode / 5.33 Death Mode 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 into Phase 3 when below 65% health.
  • Causes a blizzard to occur in addition to the rain.
  • Charges half as frequently for the remainder of the battle.
  • During 25% of its charge downtime, it summons an even row of 23 / 25 Death Mode fast and harmless frost clouds. After half a second has passed, Frost WaveFrost Waves rain down in the positions of the frost clouds.

Phase 4

  • Transitions into Phase 4 when below 50% health.
  • Causes a thunderstorm to occur in addition to the rain and blizzard.
  • Summons two additional Frost Waves with 7% less spacing.
  • Replaces every other Frost Mist attack with 3 / 5 Expert Mode / 7 Revengeance Mode even columns of tornadoes. Tornadoes last for 20 seconds before disappearing.

In Expert Mode

  • Segments are increased from 31 to 41 and size increased by 10%.
  • Gains a 10% velocity increase and 20% acceleration increase.
  • Charges 10% more frequently, and charges 10% more frequently below 50% health.
  • Gains a variation of the Frost Wave attack which has an alternating pattern.
  • Spawns five tornadoes in total with 14.29% less spacing.

In Revengeance Mode

  • Segments are increased from 41 to 51 and size increased by 5%.
  • Gains a 5% velocity increase and 20% acceleration increase.
  • Charges 5% more frequently, and charges faster the lower its health 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 seven tornadoes in total with 14.29% less spacing.
  • Lightning bolts resulting from charge attacks are 14.29% faster.

In Death Mode

  • Segments are increased from 51 to 61 and size increased by 5%.
  • Charges 5% more frequently.
  • Rains two additional Frost Waves with 7% less spacing than in Classic Mode.

In Boss Rush

  • Size increased by 5%.
  • Gains a 15% velocity increase and 20% acceleration increase.
  • 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.
  • All segments reduce damage from grenade-type projectiles by 80%. A list of affected projectiles is below.
Resisted grenades
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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.
  • Mobility is the key to this battle. Although it's 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 Seraph 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 is defeated, as its fast speed and high damage can make the fight very challenging.

Trivia

  • The BestiaryBestiary entry for the Storm Weaver: "It resides high up in the stratosphere, feasting on wyverns and storm swimmers alike, which give it powerful electrokinesis."
  • 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.
    • If the Calamity Music add-on mod is disabled, Boss 3 will play instead.
  • According to the lore, The Devourer of Gods is the same species as the Storm Weaver, meaning that it likely has the same type of flesh underneath its armor.
  • 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.
  • Prior to the 1.4.5.004 update, the Storm Weaver used to spawn Stasis Probes when hurt, similar to The Destroyer's spawning Probes.
  • If the Boss Checklist Mod is installed, its unique despawn message will be "Storm Weaver hid itself once again within the stormfront."