Blunder Booster

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Blunder Booster
  • Blunder Booster.png
Stack digit 1.png
Tooltip12% increased rogue damage and 15% increased rogue projectile velocity
Stealth generates 10% faster
Summons a red lightning aura to surround the player and electrify nearby enemies
Press Booster Dash to consume 25% of your maximum stealth to perform a swift upwards/diagonal dash which leaves a trail of lightning bolts
This effect has a 1 second cooldown before it can be used again
Inflicts DebuffElectrifiedElectrified
100% chance

Debuff duration3 seconds
Debuff tooltipMoving hurts!
RarityRarity Level: 11
Sell 24 Gold Coin.png
Research1 required
Projectiles created
Blunder Booster Lightnings
Red Lightning Bolts
Blunder Booster Aura
Blunder Booster Aura
Cooldown used
Rogue Booster Cooldown (Blunder Booster)
Rogue Booster Cooldown
1 second (After usage)
Blunder Booster's electric aura

The Blunder Booster is a craftable post-Moon Lord accessory that is the direct upgrade to the Plagued Fuel Pack. When equipped, it increases rogue damage by 12%, increases rogue projectile velocity by 15% and increases the rate that stealth generates by 10%. Additionally, a red aura is summoned around the player that damages enemies and inflicts the Electrified debuff.

Pressing the Booster Dash key causes the player to dash diagonally upwards at the cost of 25% of the player's stealth, leaving a trail of damaging red lightning bolts. The dash has a 1 second cooldown before it can be used again.




  • The Blunder Booster cannot be equipped if the player is wearing the Plagued Fuel Pack accessory, and vice versa.


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
  • Increased sell price from 22 Gold Coin to 24 Gold Coin.
  • Now spawns 5-6 lightning projectiles when dashing instead of 2-6.
  • Fixed its aura causing crashes or instantly despawning enemies which can receive knockback.
  • Aura now inflicts Electrified for 3 seconds instead of 5.
    • Decreased internal cooldown from 1.5 seconds to 1.
    • Now increases stealth generation by 10%.
    • Fixed it having an outdated tooltip.
  • Fixed aura not showing up for other players in multiplayer.