Urchin Flail

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Urchin Flail
  • Urchin Flail.png
Stack digit 1.png
TypeWeaponCrafting material
Damage20 Melee
Knockback6 (Average)
Critical chance4%
Use time25 Slow
TooltipLaunch an urchin ball, which shoots a spike on contact with an enemy
Inflicts DebuffPoisonedPoisoned
100% chance

Debuff duration3 seconds (Flail)
2 seconds (Spike)
Debuff tooltipSlowly losing life
RarityRarity Level: 2
Buy / Sell 2 Gold Coin.png /  40 Silver Coin.png
Research1 required
Projectiles created
Urchin Ball
Urchin Ball
Urchin Ball Spike
Urchin Ball Spike
Not to be confused with Urchin Mace, a flail crafted using Sea Remains.

The Urchin Flail is a Pre-Hardmode flail that is sold by the Sea King for 2 Gold Coin. It throws out an urchin ball that shoots an urchin spike upon hitting an enemy, inflicting the Poisoned debuff on contact. Urchin spikes visually stick onto enemies and disappear after a short amount of time or when the enemy is killed. Once the urchin ball hits a tile or an enemy, it will retract back to the player. It is not affected by gravity and cannot be swung around or be redeployed while the urchin has already been thrown out.

Its best modifier is Godly. It cannot get modifiers that affect size.


Used in


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
  • Nerfed damage from 33 to 20, but buffed shot speed from 12 to 16.
  • Now inflicts Poisoned instead of Acid Venom.
    • Decreased Venom duration from flail from 5 seconds to 3, and spikes from 5 seconds to 2.
    • No longer considered a nature weapon.