Bloodfire Bullet

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Bloodfire Bullet
  • Bloodfire Bullet.png
Stack digit 9.pngStack digit 9.pngStack digit 9.pngStack digit 9.png
Damage26 Ranged
Knockback4.5 (Average)
Velocity Multiplier5x
TooltipAccelerates your life regeneration on hit
Deals bonus damage based on your current life regeneration
RarityRarity Level: 12
Sell 24 Copper Coin.png
Research99 required
Projectile created
Bloodfire Bullet (projectile)
Bloodfire Bullet

Bloodfire Bullets are post-Moon Lord bullets made from Bloodstone Cores. Upon contact with an enemy, they accelerate the regeneration rate of the player. Additionally, their base damage is increased by the player's life regeneration, which calculates when the enemy has been hit.



Crafting Station
Ancient ManipulatorAncient Manipulator
Bloodstone CoreBloodstone Core1
Bloodfire BulletBloodfire Bullet333


  • Bloodfire Bullets increase the player's lifeRegenTime variable by 2 frames per enemy hit.
    • The variable represents the number of frames since the last time the player has been hit, with a maximum of 3600 frames, or 60 seconds. The higher the number, the higher the regeneration. An exact formula of the regeneration rate which depends on this variable can be found here.
  • The amount of damage boosted by the Bloodfire Bullet is equal to (1 + 0.1 * lifeRegen) * lifeRegenTime / 100
    • This does not apply if the player's life regeneration is less than zero.
    • Since the damage application only occurs when the enemy has been hit, this damage addition is flat and is therefore calculated after all other damage bonuses.
    • For example, if the player hasn't been hit for 10 seconds before the bullet hits the enemy and the player has a life regeneration of 14, the amount of damage boosted would equal 14.(1 + 0.1 * 14) * 602 / 100 = 2.4 * 602 / 100 = 14.448, rounded down.
  • This pairs well with the Regenator, which increases the player's life regeneration by 12, dealing a lot of extra damage.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
  • Decreased sell price from 80 Copper Coin to 24 Copper Coin.
  • Fixed an issue that caused it to incorrectly function during PvP.