Jack-in-the-Box is an NPC in BLACKSOULS 2 that you can find in the Library Dream area. He’s a special NPC that will allow you to exchange important souls that certain enemies and bosses drop for special items related to the enemies.
The list of items you can exchange is here:
- Soul of the Head-Hunting Beast -> Vorpal Blade
- Soul of Distraction -> Porcupine Shield
- Soul of the Pregnant Cake -> Spell Stoneplate Ring
- Soul of the Bellcaller -> Sorcery, Ghostfire
- Soul of the Butcher -> Butcher’s Chainsaw
- Soul of the Gray Eagle -> Ring of Steel Protection
- Soul of Conceit -> Sorcery, Rampage
- Soul of Jack -> Manslayer’s Shotgun
- Soul of the Dean -> Sorcery, Omnibless
- Soul of the Bright Star -> Ring of Heaven
- Soul of the Old Knight -> Sorcery, Stone Flesh
- Soul of the Giant’s Home -> Black Rabbit Ring
- Soul of the Knight of Hearts -> Knight of Hearts’ Ring
- Soul of the Knight of Spades -> Knight of Spades’ Ring
- Soul of the Knight of Clubs -> Knight of Clubs’ Ring
- Soul of the Slave Emperor -> Sorcery, King’s Order
- Soul of the Slave Empress -> Sorcery, Heavy Soul Discharge
- Soul of the Queen of Torture Tools -> Sorcery, Omnicurse
- Soul of the Bandersnatch -> Violent Sword Bandersnatch
- Soul of the Jubjub -> Mad Bow Jubjub
- Soul of the Jabberwock -> Rotten Scythe Jabberwock
- Soul of the God’s Odd Fish -> God Fish’s Ring
- Soul of the Deep Sea Knight -> Deep Sea Knight’s Anchor
- Soul of the Dragon Hunter -> Heroic Vorpal Sword
- Sword of the Wet Nurses -> Guardian Angel
- Soul of Florence -> Holy Gunblade
- Soul of Winterbell’s Wind -> Windless Wrap
- Soul of the White Unicorn -> Unis’ Rapier
- Soul of the White Lion -> Leiden’s Twin Axes
