Calamity Mod Wiki
Omega Biome Blade
  • Omega Biome Blade.png
Stack digit 1.png
TypeWeaponCrafting material
Damage220 Melee
Knockback8 (Very Strong)
Critical chance4%
Use time17 Very Fast
TooltipFires different homing projectiles based on what biome you're in
Projectiles also change based on moon events
RarityRarity Level: 12
Sell 24 Gold Coin.png
Projectile created
Biome Blade (projectile)
Omega Biome Blade

The Omega Biome Blade is a craftable post-Moon Lord broadsword that auto-swings and is an upgraded version of the True Biome Blade. When swung, it fires a stack of three Biome Blade projectiles on top of each other, which cannot pierce through tiles nor targets, but can home into enemies. The color and the debuff inflicted by the projectile on hit varies based on the biome that the player is in. Additionally, the player will gain additional buffs during certain moon events. All buffs and debuffs inflicted last 10 seconds.

Its best modifier is Legendary.

Buffs and Effects[]

Moon Event Player Buff
Blood MoonBlood Moon BattleBattle
Frost MoonFrost Moon Rapid HealingRapid Healing
Pumpkin MoonPumpkin Moon Well FedWell Fed

Only one biome color and debuff can be applied at a time. The following is a list of biome effects from highest to lowest priority.

Biome / Event Color Enemy Debuff
Astral InfectionAstral Infection #FF7F50 ● Astral Infection (debuff)Astral Infection
JungleJungle #80FF80 ● PlaguePlague
Snow biomeSnow / Ice #80FFFF ● Glacial StateGlacial State
Sulphurous SeaSulphurous Sea
#000080 ● Crush DepthCrush Depth
The CorruptionThe Corruption #8040FF ● n/a
The CrimsonThe Crimson #800000 ● n/a
DungeonDungeon #400080 ● FrostburnFrostburn
DesertDesert #FFFF80 ● Holy FlamesHoly Flames
Glowing Mushroom biomeGlowing Mushroom #00FFFF ● Temporal SadnessTemporal Sadness
The UnderworldThe Underworld #FF8000 ● Brimstone FlamesBrimstone Flames
SpaceSpace #FFFFFF ● n/a
The HallowThe Hallow #FFFF00 ● Holy FlamesHoly Flames
Nebula PillarNebula Pillar #FF00FF ● n/a
Stardust PillarStardust Pillar #FF8000 ● n/a
Solar PillarSolar Pillar #3500FF ● n/a
Vortex PillarVortex Pillar #00FF00 ● n/a
None of the above #008000 ● Armor CrunchArmor Crunch



Used in[]


  • If the player travels into a different biome after a projectile is fired, the projectile's effect will change to the new biome.
  • The Ocean, Space, and Underworld biomes are determined by the player's position and depth.
    • Biomes such as the Abyss or the Brimstone Crag will not count as the Ocean or Underworld respectively if they do not meet the position requirements.
      • As most of the Abyss takes place below the Surface layer, it often counts as none of the biomes.
  • If the biome does not have a corresponding debuff, then the next matching biome on the list is chosen.
    • For example, if the player is in a corrupted desert, the projectile will be purple and inflict Holy Flames debuff. If the corrupt biome belongs to none of the other biomes on the list, then it would inflict the Armor Crunch debuff instead. However, if the player is in a corrupted ocean, the projectile would fully inherit the ocean effects as it is higher on the list.