Binding of Isaac: Rebirth Wiki
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Binding of Isaac: Rebirth Wiki
Attributes
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.

The large majority of characters have a base Luck of 0. The following characters are exceptions:

Character Luck
Keeper Keeper Dead Tainted Lazarus Dead Tainted Lazarus Tainted Keeper Tainted Keeper -2
Lazarus Lazarus Esau Esau -1
Jacob Jacob 1
  • Eden Eden and Tainted Eden Tainted Eden: varies between -1 and 1, inclusive (including decimal values).
  • Cain Cain's base Luck is technically 0, but he starts with Lucky Foot Lucky Foot, increasing his luck to 1.

Effects of Luck[]

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 Removed in Repentance 66%/Added in Repentance 33% of heart-type drops, replacing them with nothing.
    • Added in Repentance For Jacob and Esau, the room drop rate depends on the total luck the 2 characters have.
  • 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.
    • Certain tear effect chances scale linearly with luck, while others scale exponentially with luck, meaning that it can take a lot of luck to notice a significant increase in activation rates.
    • Tear items affected by Luck are:
    • Trinkets affected by Luck are:
    • 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[]

Activated Items[]

Name ID Icon Quote Description Added in Repentance Quality
Added in Afterbirth Mom's Box 5.100.439
Mom's Box
4 rooms
What's inside? Increases Luck by 1 and doubles the effects of trinkets while held. When used, drops a random trinket on the ground. 3
Added in Afterbirth † Dataminer 5.100.481
Dataminer
4 rooms
109 Displaces enemy sprites for the current room, randomly increases one stat and decreases another. 0

Passive Items[]

Name ID Icon Quote Description Added in Repentance Quality
Latch Key 5.100.343 Latch Key Luck up Grants 1 Soul Heart and +1 luck. Spawns 2 Keys. 2
Lucky Foot 5.100.46 Lucky Foot Luck up +1 luck. Increases chance of winning Shell Games and Fortune Tellers (independent from the luck stat).
Added in Repentance Converts all bad pills into good pills, without identifying them.
2
Magic Scab 5.100.253 Magic Scab HP + luck up Grants one full Red Heart container, +1 luck. 2
Missing No. 5.100.258 Missing No. Syntax error Randomizes all passive items and stats upon pickup and at the start of each succeeding floor. 2
Added in Afterbirth Mom's Pearls 5.100.355 Mom's Pearls Range + luck up +1.25 range, +0.5 tear height, +1 luck. Added in Repentance Grants one Soul Heart. 2
Added in Afterbirth † YO LISTEN! 5.100.492 YO LISTEN! Yo listen! +1 luck. Spawns a fairy familiar that points out Secret Rooms, Crawl Space entrances, and tinted rocks. 2
Added in Repentance Candy Heart 5.100.671 Candy Heart Power of love Gives Isaac a permanent stat boost whenever he heals with red heart pickups. 2
Added in Repentance Evil Charm 5.100.632 Evil Charm Luck up + you feel protected Increases luck by 2.0. Provides immunity to burn, confusion, fear, and poison. 1
Added in Repentance Sausage 5.100.669 Sausage All stats up Adds a Red Heart Container, fully heals Isaac, and gives +0.2 Speed, +0.5 Damage, +0.5 Tears, +1.5 Range, +0.2 Shot Speed, and +1.0 Luck. 3
Added in Repentance Sol 5.100.588 Sol Radiant victory Reveals the location of the Boss room. Upon defeating a boss, activates XIX - The Sun, fully recharges Isaac's active item, grants bonus damage and luck for the rest of the floor, and removes curses. 2
Added in Repentance Soul Locket 5.100.686 Soul Locket Power of faith Gives Isaac a permanent stat boost whenever he picks up a soul heart. 2

Trinkets[]

Name ID Icon Quote Description
Lucky Toe 5.350.42 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.
Added in Repentance Perfection 5.350.145 Perfection Luck way up. Don't lose it! +10 Luck. If Isaac takes damage, the trinket is destroyed and its effect is removed.

Other[]

  • "Luck Up" pills increase luck by 1, and "Luck Down" pills decrease luck by 1.
  • Putting a coin in the Donation Machine has a small chance to increase 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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