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  • Icebreaker.png
Stack digit 1.png
TypeWeaponCrafting material
Damage60 Rogue
Knockback6.75 (Strong)
Critical chance4%
Use time13 Fast
TooltipStealth strikes spawn a cosmic explosion and freeze nearby enemies on enemy hits
Inflicts DebuffFrostbiteFrostbite
100% chance

Debuff duration3 seconds
Debuff tooltipIt's either really hot or really cold. Either way it REALLY hurts
Inflicts DebuffGlacial StateGlacial State
100% chance

Debuff duration1 seconds (Stealth strike)
Debuff tooltipCannot move
Inflicts DebuffNightwitherNightwither
100% chance

Debuff duration3 seconds (Explosion)
Debuff tooltipIncinerated by lunar rays
RarityRarity Level: 5
Sell 4 Gold Coin.png 80 Silver Coin.png
Research1 required
Projectile created
Cosmic Ice Burst
Cosmic Ice Burst
Dropped by
Cryogen125% / 33.33% Expert Mode

The Icebreaker is a Hardmode rogue boomerang that is dropped by Cryogen. When used, it throws an ice hammer-like boomerang that returns to the player after hitting an enemy or tile, or after traveling a long distance. Multiple boomerangs can be thrown out at the same time and can go through tiles while returning to the player.

Performing a stealth strike with the Icebreaker causes cosmic explosions to appear on enemy hits. The explosions inflict the Nightwither debuff and deal 150% of the weapon's damage. Additionally, all enemies within a 7-tile radius of the explosion are inflicted with the Glacial State debuff.

Its best modifier is Flawless.


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.
    • Now inflicts Frostbite instead of Frostburn.
    • Decreased sell price from 7 Gold Coin.png 20 Silver Coin.png to 4 Gold Coin.png 80 Silver Coin.png.
    • Decreased Nightwither and Frostburn durations from ice bursts from 5 seconds to 3.
    • No longer considered an ice weapon.
  • Decreased Glacial State duration from 3 seconds to 1.
  • Now inflicts Frostburn for 3 seconds.
  • Now a rogue weapon instead of a melee weapon.
  • Buffed damage from 56 to 62, use time from 15 to 13, and knockback from 6.5 to 6.75.