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  • Alluvion.png
Stack digit 1.png
Damage165 Ranged
Knockback4 (Weak)
Critical chance4%
Use time30 Very Slow
TooltipUnleashes a torrent of six arrows at once
Converts wooden arrows into a combination of sharks, torrential and typhoon arrows
RarityRarity Level: 14
Sell 28 Gold Coin.png
Research1 required
Projectiles created
Typhoon Arrow
Typhoon Arrow
Mini Sharkron
Mini Sharkron
Attacking with the Alluvion with Wooden Arrows

The Alluvion is a craftable post-Moon Lord bow and a direct upgrade of the Monsoon. It rapidly auto-fires double volleys of 6 arrows. While equipped with Wooden Arrows, the top and bottom arrows are converted into into Typhoon Arrows, which erupt into swirling typhoons on contact with enemies or tiles; the middle two arrows are converted into Torrential Arrows, which are high-velocity lasers that ignore NPC immunity frames; and the other two arrows are converted into sharks.

Its best modifier is Unreal.



Crafting Station
Cosmic AnvilCosmic Anvil
Cosmilite BarCosmilite Bar8
Endothermic EnergyEndothermic Energy20


  • This weapon is a good way to farm The Devourer of Gods, as its piercing Torrential Arrows and area of effect Typhoon Arrows can cause significant damage to the Devourer's many segments.


  • The word "alluvion" can refer to either a flood or the flow of water against a shore.
  • The Alluvion and the Monsoon both share the color scheme of the Tempest Staff.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
  • No longer uses 20 Sea Prisms, 10 Depth Cells, or 5 Tenebris in its recipe.
  • Decreased sell price from 36 Gold Coin to 28 Gold Coin.
    • Now uses 20 Sea Prisms in its recipe.
    • No longer considered a nature weapon.
    • Resprited.
    • Buffed damage from 70 to 165.
    • Now fires 6 arrows at once instead of 10, increased arrow velocity from 20 to 35.
    • Torrent arrows now grant enemies 10 local immunity frames instead of 1.
    • Whirlpool projectiles now grant enemies ID-static immunity frames instead of local immunity frames.
    • All Wooden arrows are now converted into torrent arrows and shark projectiles instead of there being a chance for Wooden arrows to be converted.
    • Now requires a Cosmic Anvil to craft instead of a Draedon's Forge.
  • Fixed sharks proccing on-hit effects from summoner accessories.
  • Now uses 1 Ascendant Spirit Essence in its recipe instead of 5 Phantoplasm.
    • Nerfed damage from 90 to 70.
    • Arrows are now affected by arrow bonuses.
  • Fixed unique arrows not being affected by the Archery Potion.
    • Tooltip now specifies that it converts Wooden Arrows.
    • Typhoons no longer deal more damage in Expert Mode.
    • Resprited.
    • Buffed damage from 45 to 90.
    • Water spouts now grant enemies 30 local immunity frames instead of 5.
    • Nerfed damage from 53 to 45.
    • Resprited Typhoon Arrows.
    • Now requires Wooden Arrows to shoot special projectiles.
    • No longer has a chance to drop ammo when a projectile lands.
  • Now uses 10 Depth Cells, 20 Lumenyl, and 5 Tenebris in its recipe.
    • Nerfed damage from 52 to 50.
    • The water spouts spawned by typhoon arrows now last 1 second instead of 2 and grant enemies 6 local immunity frames instead of 5.
  • Now uses 5 Phantoplasm in its recipe.
  • Now requires a Draedon's Forge to craft instead of an Ancient Manipulator.
    • Torrential Arrows now grant local immunity frames instead of global immunity frames when hitting enemies.
    • Water spouts now hit every 6 frames.