Calamity Mod Wiki
Omega Blue armor
  • Omega Blue armor.png
  • Omega Blue armor during Abyssal Madness
Set BonusIncreases armor penetration by 15
10% increased damage and critical strike chance and +2 minions
Short-ranged tentacles heal you by sucking enemy life
Press Armor Set Bonus to activate abyssal madness for 5 seconds
Abyssal madness increases damage, critical strike chance, and tentacle aggression/range
This effect has a 25 second cooldown
Grants BuffAbyssal MadnessAbyssal Madness
Buff duration5 seconds (Upon activation)
Buff tooltipIncreased damage, critical strike chance, and tentacle aggression/range
Inflicts DebuffAbyssal Madness CooldownAbyssal Madness Cooldown
100% chance

Debuff duration25 seconds (After usage)
Debuff tooltipYour abyssal madness is recharging
Inflicts DebuffCrush DepthCrush Depth
100% chance

Debuff duration3 seconds (On hit)
Debuff tooltipAquatic pressure
RarityRarity Level: 13
Sell 1 Platinum Coin.png 8 Gold Coin.png 25 Silver Coin.png (set)
Omega Blue healing tentacles.png
The Omega Blue armor's healing tentacles.

Omega Blue armor is a craftable post-Moon Lord armor set crafted from several primarily Abyssal materials, and is only obtainable after Polterghast has been defeated. A total of 30 Reaper Teeth, 19 Lumenyl, 19 Tenebris, and 9 Ruinous Souls are required to craft a full set. If the full set is visible (whether equipped or in social slots), the player will have a pulsating aura around them.

It consists of an Omega Blue Helmet, Omega Blue Chestplate, and Omega Blue Tentacles.

Omega Blue Armor's healing tentacles and Abyssal Madness being used against two super dummies, inflicting the Crush Depth debuff. Notice how the tentacles speed up and leave trails of blue light once Abyssal Madness is activated.


The full set grants the following stats and bonuses (this includes the set bonus):

  • 69 defense
  • 46% increased damage
  • 38% increased critical strike chance
  • +2 max minions
  • 12% increased movement speed
  • Armor penetration increased by 15.
  • Can move freely through liquids.
  • All attacks inflict Crush Depth on hit for 4 seconds.
  • Negates all positive life regen.


While the set bonus is active, six blue tentacles will sprout from the wearer's back. The tentacles move in sync with the player and sway back and forth if the player is idle. They will automatically attack enemies within a certain range by swatting at them and sticking to them, greatly healing the player in the process through lifesteal.

Pressing Armor Set Bonus will activate "Abyssal Madness" for 5 seconds, further increasing damage and crit chance by 10%, and granting the tentacles increased range and aggression for its duration. While activated, the tentacles leave trails of blue light particles, the helmet changes appearance, and the player sparkles. Abyssal madness has a 25 second cooldown.

The tentacles cannot normally perform critical hits. However, tentacles will always land critical hits during Abyssal Madness.


Omega Blue Helmet
  • Omega Blue Helmet.png
Body slotHelmet
TooltipYou can move freely through liquids
12% increased damage and 8% increased critical strike chance
Sell 35 Gold Coin.png
Omega Blue Chestplate
  • Omega Blue Chestplate.png
Body slotShirt
Tooltip12% increased damage and 8% increased critical strike chance
Your attacks inflict Crush Depth
No positive life regen
Sell 38 Gold Coin.png
Omega Blue Tentacles
  • Omega Blue Tentacles.png
Body slotPants
Tooltip12% increased movement speed
12% increased damage and critical strike chance
Sell 35 Gold Coin.png 25 Silver Coin.png




  • While the armor does disable positive life regen, instant health restoration such as Recovery Potions and the Nurse will still heal the player as normal.
  • A pulse of blue light particles emits from the player when Abyssal Madness's cooldown ends, signifying that it is ready to be used again.
  • The tentacles' base damage is 500, which is boosted by the average damage boost of all five classes.


  • Close combat is recommended while wearing this armor, as this will allow the tentacles to make up for the lack of life regen with their lifestealing capabilities.
  • It is not recommended to use items that decrease life regen with this set, such as the Mana Polarizer, as the negative life regen will slowly drain the player's health.
  • Due to its relatively low defense, lack of regen, and incredible offensive stat boosts, this armor acts as a glass cannon set.
  • This armor is very poor for the summoner class, as it only offers 2 minions with a 46% minion damage boost. In comparison, the Bloodflare summoner set gives 3 minion slots and 77% minion damage, as well as additional boosts while wearing the Profaned Soul Artifact.


  • The armor set itself and its tentacles resemble the Eidolon Wyrm. Specifically, it references concept art of the Eidolon Wyrms made by the artist Inanis.
  • The name for this armor and its former sprite are based on the Marvel character Omega Red, who also possesses tentacles.