Brimstone Elemental

"The most powerful of the elementals, bent on exacting revenge..."

The Brimstone Elemental is a Hardmode boss fought in the Brimstone Crag biome. She cycles through three distinct behaviors, with varying levels of aggression and methods of attack.

After Providence, the Profaned Goddess has been defeated, she becomes much stronger and begins dropping Bloodstone, which can be combined with Phantoplasm and Blood Orbs to make Bloodstone Cores.

Spawn
The Brimstone Elemental does not spawn on her own and requires the player to summon her with the Charred Idol. She must be summoned in the Brimstone Crag.

Behavior
Brimstone Elemental has 3 phases which she cycles through randomly; the same phase never appears twice in a row. She will always start the fight in Phase 1.

Leaving the Brimstone Crag will cause the Brimstone Elemental to enrage, increasing her movement speed, projectile speed, and fire rate.

Phase 1

 * She will teleport to random locations twice and move in towards the player, leaving behind eruptions of brimstone firedust as she travels.
 * The eruptions are purely visual and deal no damage.

Phase 2

 * She will fly around quickly above the player, rapidly firing Brimstone Hellfireballs and periodically a spread of four down onto them.
 * Projectiles in this phase inflict the Brimstone Flames debuff onto the player.

Phase 3

 * She will close her rose petals to become highly resistant to damage. While in this state she will fire rings of 12 Brimstone Darts along with a barrage of 6 . The darts are fired in an evenly spaced ring pattern, and the Hellblasts are fired in an accelerating arc-shaped pattern towards the player.

All Phases

 * As her health gets lower she will teleport more frequently, move faster, shoot her projectiles more often, and her projectiles travel faster.

In Expert Mode

 * Movement speed during Phase 1 is increased.

In Revengeance Mode

 * Summons Brimlings to aid her during the fight, which shoot Brimstone Hellfireballs at the player.
 * If a Brimling is killed, a new one will quickly be spawned in its place.
 * Movement speed during Phase 1 is increased.
 * When below 50% health, she will only teleport once during Phase 1.
 * When below 50% health, the Brimstone Elemental gains a new phase, where she fires a Brimstone Ray from her eye. The ray is telegraphed by a line appearing roughly two seconds before it fires. The whole ray appears instantly upon being fired, but does not move or sweep after being fired, and it remains for about two seconds. It then releases two evenly spread rows of Brimstone Darts perpendicular to it, which move slowly before accelerating. This repeats once.
 * The Brimstone Elemental slows to a stop before firing the first ray.
 * The Brimstone Elemental does not aim the ray directly at the player, but rather aims toward where the player is moving and will likely be by the time the ray fires. This is apparent with the line telegraph, which constantly moves and readjusts to aim towards the predicted position.

In Death Mode

 * Fires projectiles more often during all phases.
 * Movement speed increases as her health decreases.
 * Only fires 1 laser below 50% health.

During the Boss Rush

 * All difficulty mode changes, regardless of the world's difficulty mode.
 * Teleports much more often during Phase 1.
 * Movement speed during Phase 1 is greatly increased.

Aftermath

 * Once defeated, the Wizard will begin selling Charred Idols.
 * The Brimlish will be able to be caught in the Brimstone Crag.
 * Charred Ore will become mineable.
 * Charred Slimes will begin spawning in the Brimstone Crag.

Tips

 * If the player has an Adamantite Pickaxe or stronger, try mining out the Brimstone Slag. This will offer more mobility to dodge her attacks.
 * Alternatively, one could use explosives like Bombs and Dynamite to destroy the slag and make a large, clear area.
 * The Brimstone Crag has very rough terrain that's easy to get stuck on, so it's a good idea to smooth out the walls, roof and ground of the arena.
 * Try to move around and focus on dodging instead of attacking when she closes her petals, as her projectiles can travel through blocks and her defense is greatly increased in this phase.
 * The player should be aware of their proximity to her during this phase, as the further they are from her, the faster her projectiles go.
 * If the player is too close however, her projectiles will have no time to spread out, so dodging them may be harder.

Trivia

 * Brimstone Elemental's theme is Left Alone, which was composed by the artist DM DOKURO.
 * If the Calamity Music add-on mod is disabled, Boss 4 will play instead.
 * While some artwork depicts her as having two eyes, Brimstone Elemental is actually a cyclops. This could be because her phase one sprite's pupil stretches the height of her eye, "splitting" it into two.
 * The projectiles used in her brimstone barrages are the same projectiles used in the Supreme Calamitas fight.
 * Brimstone Elemental was previously an alternative for Skeletron Prime because of her previous ability to drop Souls of Fright.
 * Brimstone Elemental was formerly referred to in the mod's files overall as "BrimstoneWaifu."

Lore
硫磺火元素