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Health Damage Tears Range Shot Speed Speed Hidden Attributes

Luck Stat Icon.png Luck affects a variety of chance-based effects and is represented by a 3-leaf clover.

Effects of luck[edit | edit source]

Luck influences many different elements:

  • Room drops: For calculating room drops, luck is capped between 0 and 10, with higher luck not only resulting in higher amounts of drops but also higher quality drops such as chests.
    • Room drop rates are otherwise identical in Normal and Hard game modes, but Hard mode removes 65% of heart-type drops, replacing them with nothing.
  • Tear effect chance: The chance of shooting tears with status effects becomes more likely as Luck goes up. This scales up to 100% chance per tear in most cases with enough Luck.
    • Most of the status inflicting effects require high Luck to activate on every tear.
      • Since these effects persist on the enemies for a set amount of time regardless of the Tears stat, a fast rate of fire is often enough to affect an enemy indefinitely.
    • Other items affected by Luck include:
      • Added in Afterbirth †Broken Modem Broken Modem: Higher luck increases the rate of freezing enemies and their shots.
      • Celtic Cross Celtic Cross: The Celtic Cross grants its invulnerability more often with higher Luck, topping out at 100% at 27 Luck.
      • Gimpy Gimpy: The Soul Heart/Black Heart drop chance upon taking damage increases with higher Luck, topping out at 50% at 22 Luck.
      • Midas' Touch Midas' Touch: Poops generated by Isaac's actions have a chance to turn into Golden Poop, starting at 10% with 0 Luck up to 100% at 18 Luck.
      • Added in Afterbirth †Mystery Gift Mystery Gift: Higher luck results in a lower chance of getting The Poop The Poop or A Lump of Coal A Lump of Coal.
      • Old Bandage Old Bandage: The Red Heart drop chance when you take a hit increases with higher Luck, topping out at 50% at 29 Luck.
      • Virgo Virgo: The shield activation chance increases with Luck, topping out at 100% at 10 Luck.

However, Luck doesn't affect:

Items that affect luck[edit | edit source]

Activated Items[edit | edit source]

Name ID Icon Quote Description
Added in Afterbirth Mom's Box 439
Mom's Box
4 rooms
What's inside? When used, Mom's Box will drop a random trinket on the ground. While held, increases luck by 1 and doubles the effects of trinkets.
Added in Afterbirth † Dataminer 481
4 rooms
109 Displaces enemy sprites for the current room, randomly increases one stat and decreases another.

Passive Items[edit | edit source]

Name ID Icon Quote Description
Latch Key 343 Latch Key Luck up Increases Luck by 1, grants 1 Soul Heart and spawns 2 Keys.
Lucky Foot 46 Lucky Foot Luck up +1 Luck. Increases chance of winning Shell Game Beggar. (Independent of luck stat)
Magic Scab 253 Magic Scab HP + Luck up Increases luck and HP by 1.
Missing No. 258 Missing No. Syntax error Randomizes all passive items and stats upon pickup and at the start of each succeeding floor.
Added in Afterbirth Mom's Pearls 355 Mom's Pearls Range + luck up +1.25 Range Up. +0.5 Tear Height. +1 Luck Up.
Added in Afterbirth † YO LISTEN! 492 YO LISTEN! Yo listen! +1 luck. Spawns a fairy familiar that points out secret room entrances and tinted rocks.

Trinkets[edit | edit source]

Name ID Icon Quote Description
Lucky Toe 42 Lucky Toe Luck up! +1 Luck. Adds a chance to drop an extra pickup when opening a chest, destroying a machine, or blowing up a tinted rock.

Other[edit | edit source]

  • "Luck Up" pills increase luck by 1, and "Luck Down" pills decrease luck by 1.
  • Added in Afterbirth Lucky pennies increase luck by 1.
  • Added in Afterbirth In co-op, Green Baby will occasionally briefly increase luck by 2. Dark Baby will occasionally briefly increase all stats, including luck.

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