Calamitas

"You underestimate my power..."

Calamitas is a Hardmode boss fought at night. She is a significant mid-Hardmode boss that is intended to be challenged soon before, or alternatively to, Plantera.

She increases substantially in difficulty once Providence, the Profaned Goddess has been defeated, boosting the health and damage of her and her brothers, and she will begin dropping Bloodstone.

Spawn
Calamitas does not spawn on her own and requires the player to summon her with the Eye of Desolation during the Night.

Behavior
Calamitas will behave primarily like Retinazer, firing lasers and chasing the player. At different points throughout the fight, she will summon minions and her brothers to assist her. If it becomes daytime during the battle, Calamitas and her brothers will enrage, moving faster and shooting higher velocity projectiles. Cataclysm's flamethrower range will also greatly increase.

Phase 1

 * Acts like Retinazer but more powerful, firing Brimstone Lasers which inflict the Brimstone Flames debuff and increase in velocity as they travel. Lasers split into three quick lasers after 1 second, which begin homing after a few seconds. The split lasers can go through blocks, but the initial lasers can't.
 * When Calamitas reaches 75% of her health, she goes into her second phase and regenerates all of her health.

Phase 2

 * Calamitas becomes enraged, and begins firing Brimstone Hellfireballs that accelerate over time and explode on contact with tiles, alongside her regular laser attacks. Calamitas fires more frequently as her health lowers.
 * Upon reaching 70% of her new health bar, she summons the fleshy brother Cataclysm. Cataclysm will alternate between breathing a brimstone flamethrower and charging at the player three times.
 * Cataclysm will not fire anything until shortly after spawning, to prevent cheap hits.
 * Calamitas herself will stop firing Brimstone Lasers while brothers are alive.
 * When Calamitas' health reaches 40%, she summons the metallic brother Catastrophe. Catastrophe will alternate between spitting bouncing brimstone fireballs and quickly charging at the player four times.
 * Catastrophe will not fire anything until shortly after spawning, to prevent cheap hits.
 * When Calamitas' health reaches 35%, she will summon an orbiting ring of five Soul Seekers around her. While Soul Seekers are alive, laser-firing Life Seekers will periodically spawn. The spawn rate of Life Seekers scales with the number of remaining Soul Seekers.
 * When Calamitas' health reaches 10%, she will resurrect both of her brothers simultaneously.

In Expert Mode

 * Calamitas' brothers MUST be defeated for her to take reasonable damage again.
 * Calamitas and her brothers attack and shoot more aggressively.

In Revengeance Mode

 * Calamitas and her brothers attack and shoot even more aggressively.
 * When Calamitas' health is below 70%, she charges at the player twice following her laser and fireball attacks whenever no brothers are alive.

In Death Mode

 * Calamitas shoots even more aggressively.
 * She summons a ring of ten Soul Seekers around her instead of five when she reaches 35% health.

Aftermath

 * Once defeated, enemies in the Abyss begin dropping Depth Cells and Lumenyl.
 * Tenebris will begin spreading into nearby Planty Mush in the Abyss.
 * Abyssal Crates will contain Lumenyl, Depth Cells, Tenebris, and Planty Mush.
 * The Bandit will begin selling the Deep Wounder.
 * The Floodtide will be obtainable via Fishing.
 * Aquatic Aberrations and Paraseas begin spawning in the Ocean.
 * The same occurs if Plantera is defeated before Calamitas.
 * Reapers and Psychos will begin dropping Solar Veils.
 * The same occurs if Plantera is defeated before Calamitas.

Tips

 * Making a large circle around Calamitas with the help of platforms will allow you to dodge many of her attacks.
 * Calamitas’ brothers can quickly overwhelm you especially on Revengeance or Death Mode, make sure to deal with them as quickly as possible.
 * Use a Rod of Discord to avoid the brothers when they spawn to avoid any unnecessary contact damage.

Trivia

 * The theme heard during the first phase of Calamitas is Boss 2. If the Calamity Music add-on mod is disabled, it will play for the whole fight.
 * The theme heard during the second phase of Calamitas is Raw, Unfiltered Calamity, which was composed by the artist DM DOKURO.
 * Prior to her current theme being introduced, her theme during the second phase was a remix of the Boss 2 theme made by silentzorah.
 * The song features motifs from previous bosses in the Calamity Mod:
 * Guardian of the Former Seas / Outcast of the Sulphurous Seas (Desert Scourge / Aquatic Scourge) are remade into the song's introduction.
 * Blood Coagulant (The Perforators) can be heard at 0:44, but is rarely acknowledged as it is very subtle in the song's background.
 * Antarctic Reinforcement (Cryogen) plays at 1:01 into the song.
 * 1NF3$+@+!0N (Crabulon) plays at 1:23.
 * Return to Slime (The Slime God) plays at 1:45.
 * The Filthy Mind (The Hive Mind) plays at 2:06.
 * Left Alone (Brimstone Elemental) plays at 2:28.
 * Calamitas is Latin for "disaster".
 * The names of Calamitas and her brothers all denote a kind of violent event or destruction, all of which start with the letter C (Calamitas, Catastrophe, and Cataclysm).
 * When she is defeated, her death message reads "The Calamitas Clone has been defeated!"
 * Reinforcing this, her entry on the official Calamity Mod forum post and her lore item refers to her as "Calamitas Clone" as well. These, along with the lore item's mention of the "bloody inferno" still lingering, are foreshadowing Supreme Calamitas.
 * In previous versions of the mod, the death message was "A Calamitas Doppelganger has been defeated!"
 * As a result, Calamitas is often referred to as "Clonelamitas" by the community.
 * The quote said by Calamitas "Impressive child, most impressive" is likely a reference to Senator Armstrong from Metal Gear Rising: Revengeance, who says the line "Impressive, Jack, most impressive".
 * Prior to her current lore entry, Calamitas used the lore entry that is currently used by Supreme Calamitas.
 * When first introduced, her original sprite was a recolor of Retinazer's second form.