Acidsighter

AcidsighterStatistics

Drops

* Item **(Quantity)****Rate**
* Pungent Bomber25% / **33%**
* Acid Bow25% / **33%**
* Caustic Claw25% / **33%**
* Corrosive Eye Staff25% / **33%**
* Razor Teeth25% / **33%**
* Treasure Bag(Acidsighter)**100%**

SoundsHurt
Killed
Acid Bomb
Teeth Bomb
Charge
Spawn Mutated Eye
***Map Icon***
The **Acidsighter** (Japanese: アシッドサイター *Ashiddosaitā*) is a Pre-Hardmode boss. It has the appearance of a giant Demon Eye that has been poisoned by sulphuric waters.

Defeating it will unlock the Acid Rain event.

## Spawn

The Acidsighter does not spawn on its own, and requires the player to summon it with the Poisoned Sclera. It must be summoned in the Sulphurous Sea during the Night.

## Behavior

The Acidsighter has three phases, each of which has its own attack pattern and AI. It will progress through these phases as it loses health.

It becomes enraged if the player leaves the Sulphurous Sea or Ocean, or if it becomes daytime, increasing its movement speed and attack rate. The effects will stack if the boss is both outside of the Sulphurous Sea or Ocean and it is daytime.

### Phase 1

* Hovers above the player while spawning Mutated Eyes.
* Charges at the player three times.

* Fires Acid Bombs that split into six Acid Shots.
* When at 65% / **70%** / **75%** health or lower, every 2-3 attacks, spins around the player before charging at them.
* Fires Teeth Bombs that split into three homing teeth.

### Phase 2

Upon reaching 50% / **55%** / **60%** / **65%** health, the boss will roar, gaining a bright, green glow, and spawning 4-5 Mutated Eyes.

* Hovers above the player while firing Acid Bombs.
* Charges at the player three times. Explodes into eight Acid Shots when dashing.
* Hovers below the player while firing Teeth Bombs.
* Spins around the player before charging at them. Leaves a trail of Acid Bombs when charging.
	+ Acid bombs spawned from this attack explode into two Acid Shots.
* Chases the player while spawning Mutated Eyes.

### Phase 3

Upon reaching 30% / **40%** / **45%** / **50%** health, the boss will roar again, the green glow is stronger, and it deals 25% more damage.

* Spins around the player while firing Acid Bombs.
* Charges at the player three times. Explodes into 12 Acid Shots when dashing.
* Performs a rapid chain dash attack that leaves a trail of Acid Bombs.
	+ Acid bombs spawned from this attack explode into four Acid Shots.
* Chases the player at a rapid pace while firing Teeth Bombs.
* Fires Mutated Clusters that slow down and explode into 2-3 Mutated Eyes.

### In Expert Mode

* Gains a new attack.
	+ Charges at the player while breathing Acid Venom.
* Mutated Eyes are faster.

### In Revengeance Mode

* Increased attack rate.
* Mutated Eyes will fire Acid Shots if the Acidsighter is below 55% health.

### In Death Mode

* Increased acceleration.
* Mutated Eyes explode into a lingering Acid Cloud that rains Acid Shots when hitting a solid tile.

### On the For The Worthy seed

* Is 50% smaller.
* Increased velocity.
* Leaves Acid Bombs when charging regardless of its phase.
* Mutated Eyes fire Acid Bombs that deal 50% damage.

## Summons

Mutated EyeStatistics

SoundsHurt
Killed

## Aftermath

* The Acid Rain event may now begin naturally.

## Tips

Swiftness Potions, Sunflowers, Hermes Boots and their upgrades, and a Cloud in a Bottle and its upgrades or a Hook are all heavily recommended, as it will be near impossible to outmaneuver the Acidsighter's powerful dashes with just the player's base movement, especially on higher difficulties.

## Trivia

* The Acidspitter's theme is **Toxic Wisdom**, which was composed by the artist DM DOKURO.
	+ The music was the theme for the now-removed Old Duke.
	+ If the Calamity Music add-on mod was disabled, **Boss 1** plays instead.
	+ If the Boss Checklist Mod is installed, its unique despawn message is "The acidic eye swims back into the seas."