Profaned Soul Crystal

"The Profaned Goddess has recognised your devotion to purity!"

The Profaned Soul Crystal is a craftable post-Moon Lord accessory that is also dropped by Providence, the Profaned Goddess under certain conditions. Providence naturally has a low chance to drop it in Expert Mode, though the chance increases significantly after Supreme Calamitas has been defeated. In singleplayer, Providence is guaranteed to drop it if the player defeats her in Expert Mode using only the Profaned Soul Artifact and optionally Golden Gun.

The Profaned Soul Crystal has two distinct states dependent on whether or not Supreme Calamitas has been defeated in the world. Before defeating Supreme Calamitas, the accessory is entirely vanity. After defeating Supreme Calamitas, the accessory gains extensive combat functionality.

Pre-Supreme Calamitas
While equipped before Supreme Calamitas has been defeated, the player is granted several purely aesthetic effects with no functional benefits. The miniature Profaned Guardians from the Profaned Soul Artifact will be summoned, but they will not have any combat behavior and essentially serve as pets. Additionally, the accessory transforms the player into an "emissary of the profaned goddess" while equipped, visually granting them holy flame wings, converting their legs into holy flames, and turning their head and body into stone.

Post-Supreme Calamitas
When equipped after Supreme Calamitas has been defeated, and the player has over 10 free minion slots, they will be granted extensive new benefits. They will be granted the full functionality of the Profaned Soul Artifact, and using any non-summon weapon with auto-reuse will instead perform a unique attack depending on the weapon's damage type. All of these attacks deal and scale off of Summon damage. Additionally, the player may right-click while holding weapons of any class to direct minions to target the entity nearest to the cursor, in a similar manner to summon weapons.

Attacks have a chance for the guardians to form a Spear Burst, causing 6 and 12 homing spears to appear from the Defense and Offense guardians respectively. Each spear deals 50% of the guardian's damage and will not damage nor home into enemies until 0.83 seconds have passed. The chance for a spear burst to occur, along with other stats is listed below:

Attack Types
The player becomes immune to the following debuffs: On Fire!, Burning, Daybroken, Holy Flames (during the day), Nightwither (during the night).

The player is also granted the functionality of the Lava Charm and Obsidian Rose.

During the day, the player receives several offensive bonuses. The player will also receive these bonuses while submerged in lava regardless of the time.
 * 15% boosted minion damage and knockback
 * 25% increased movement speed
 * 10% increased flight time
 * Ignore water physics
 * -15 defense

During the night, the player receives several defensive bonuses. The player will also receive these bonuses while submerged in water or honey regardless of the time.
 * +15 defense
 * +5% damage reduction
 * +5 life regeneration
 * -15% movement speed

When brought below half health, the player will become enraged, causing them to emit bright particles and empowering all of the weapon attacks with increased fire rates and functional buffs.

Recipe
If the player is in The Hallow or The Underworld when crafting this item, it only consumes 5 Shadowspec Bars, 25 Divine Geodes and 50 Unholy Essence, despite requiring the full amount to craft.

Trivia

 * The death message and flame leg design are references to Ragnaros from World of Warcraft.
 * The use of the word "defiled" in the Devotion buff's tooltip is a reference to the dedicatee, MishiroUsui (aka Amber), being the first player to no-hit all bosses while the Defiled Rune was active.
 * The tooltip's quote "Thinking back, it was a boring life" is a reference to the main character of the game Blank Dream, who is named "Mishiro Usui," the dedicatee's namesake.
 * This accessory actually has a unique rarity, but is referred to here as Hot Pink for consistency between accessories.
 * This unique rarity alternates between amber (#ffa600) and emerald (#19fa19) colors.

Video
This is a video demonstrating the different weapon function effects of the Profaned Soul Crystal against a Super Dummy, followed by the accessory being used throughout the entirety of the Boss Rush.