Locked Shackle

Locked Shackle
Flavor text	"All stats up, missing its key"

Locked Shackle is a trinket added in The Reheated Update.

Effects

• Grants an all-stats up while held:
  • +0.35 tears.
  • +1.00 damage.
  • +1.00 range.
  • +0.16 shot speed.
  • +1 luck.
• Once picked up, Locked Shackle cannot be removed.
  • Locked Shackle can be replaced by picking up Paper Clip, which will drop the Locked Shackle without destroying it.
• Picking up a Key has a 25% chance to destroy the trinket and consume 1 key.
  • The type of key does not affect the chance.
  • If Isaac has a Golden Key, a key will not be removed when Locked Shackle is destroyed.
• Key-related trinkets can be picked up and will destroy Lock Shackle while applying some of the stats permanently, and can have additional unique effects:
  • Rusted Key grants double the stats.
  • Store Key grants half of the stats and spawns 5 Coins.
  • Blue Key grants half of the stats and permanently makes all Hush Flies, Blue Gapers, Blue Boils and Blue Conjoined Fatties in the blue rooms generated by Blue Key charmed while reducing their maximum HP by half.
  • Crystal Key grants half of the stats and creates a Red Room on each valid wall and for the next 2 rooms Isaac enters.
  • Gilded Key grants half of the stats and spawns 2 Locked Chests.
  • Strange Key grants double the stats and immediately activates the effect of Pandora's Box.
  • Wackey grants 10/13ths of the stats and activates the Three of Spades effect, spawning 3 random Keys of any kind with all variants having an equal chance of appearing (including Spicy Keys).

Interactions

• Mom's Purse / Belly Button: Allows Isaac to gain the benefits of Locked Shackle without losing their only trinket slot.
• Smelter: Smelting or gulping Locked Shackle will free up the trinket slot while maintaining the stat boosts — however, it still has a chance of being destroyed when picking up a key.
• Trinket Multipliers: Stat boosts are multiplied based on the amount of trinket multipliers. Has no effect on the chance of Locked Shackle being destroyed when picking up a key.
  • If Isaac is holding multiple copies of Locked Shackle, and Isaac picks up a key which would destroy them, then all of the held trinkets will be destroyed at once.
  • The effects of key-related trinket interactions with Locked Shackle will be multiplied.
• Rock Bottom: Stat boosts will remain after the trinket is destroyed.
• Blacksmith: Blacksmiths are still able to remove the Locked Shackle.
• Azurite Spindown: Using Azurite Spindown on Locked Shackle rerolls it into Pocket Dice.

Trivia

• Locked Shackle is a fan suggestion from a member of the Fiend Folio Cornmunity Discord server, PemTheBun.