Calamity Mod Wiki
Biome Blade
  • Biome Blade.png
Stack digit 1.png
TypeWeaponCrafting material
Damage55 Melee
Knockback5 (Average)
Critical chance4%
Use time29 Average
TooltipFires different projectiles based on what biome you're in
RarityRarity Level: 3
Sell 80 Silver Coin.png
Projectile created
Biome Blade (projectile)
Biome Blade

The Biome Blade is a craftable Pre-Hardmode broadsword that auto-swings. When swung, it fires a Biome Blade projectile which cannot pierce through tiles nor targets. The color and the debuff inflicted by the projectile on hit varies based on the biome that the player is in. All debuffs inflicted last 1.5 seconds, except Glacial State which lasts only 0.5 seconds.

Its best modifier is Legendary.


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 ● VenomVenom
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
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 will change into that biome's variant.
  • 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.
  • Because the Reaver Shark can mine Hellstone, this weapon can be obtained before defeating any bosses.