Binding of Isaac: Rebirth Wiki
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(in Repentance)

Bag of Crafting is an unlockable activated item added in The Binding of Isaac: Repentance.

Effects[ | ]

  • Upon use, pressing an attack direction will cause a swipe attack with high knockback and 3 damage.
    • The swipe scales in size with Isaac's size.
    • The swipe will appear further from Isaac the higher his range is.
    • The swipe can be used to open Spiked ChestSpiked Chests and Mimic chest RepentanceMimic Chests without taking damage.
    • The swipe can be used to block bullets.
    • The swipe can be aimed at any direction.
  • Swiping a pickup on the floor will add it to the bag. The bag's contents cannot be dropped. Up to 8 pickups can be stored.
    • Double pickups like Double Hearts will add two copies to the bag. Blended hearts will add one red heart and one soul heart.
    • Sticky nickels can't be picked up unless unstuck.
    • Chests and sacks can't be picked up, but can be opened with a swipe even behind obstacles.
    • If Isaac has enough money to buy a pickup from a ShopShop, using Bag of Crafting on that pickup will purchase it and automatically add it to the bag.
  • Once 8 pickups are held in the bag, the bag can be used once more to spawn an item pedestal.
    • If a recipe would result in an item that hasn't yet been unlocked, a random item will be crafted instead.
  • There are a total of 29 different types of consumables that can be placed in the bag. The ordering does not matter for the outcome.

As Character Tainted Cain iconTainted Cain:

  • If pickups are collected after the max of 8 is reached, the contents shift left and up, deleting the top left slot and adding at the bottom right. Tapping the switch key cycles the bag's contents left and up in a loop, making it possible to choose which pickup to overwrite.
  • Once 8 pickups are held in the bag, the bag will show a preview what would be crafted. Holding down the Use Pill/Card button will craft the item and place it directly in Tainted Cain's inventory.
    • Crafting an activated item while already holding one will turn the old one into pickups like collecting it would.
    • Curse of the BlindCurse of the Blind hides the crafting preview.

Item Tags:

The Bag of Crafting respects item tags, and which items are available during the current run. This includes the following:

Component Types and Qualities[ | ]

Bag of Crafting UI symbols
The cumulative quality of the components impacts the quality of the item received. The pickups belonging to each component type and their qualities are listed as below. The item received can be from the Treasure Room item pool (1× chance), Shop item pool (2× chance), Boss Room item pool (2× chance), or one of the pools listed in the table below. The pools in the table below require at least 1 of the corresponding component. For example, Devil Room items require at least 1 Black HeartBlack Heart.

If the recipe chooses an item from Devil, Angel, or Secret Room pools, the total component quality is lowered by 5 before the resulting item quality, and consequently the resulting item, is determined.

Name Quality Notes
Poop NuggetPoop Nugget 0 Adds a chance of getting a Shell Game item. The chance increases by 10× per component.
PennyPenny 1
Red HeartRed Heart (full, half, or scared) 1
Rotten HeartRotten Heart 1 Adds a chance of getting a Curse Room item. The chance increases by 10× per component.
BombBomb 2
TarotCard Card 2
Cracked KeyCracked Key 2 Adds a chance of getting a Red Chest item. The chance increases by 10× per component.
KeyKey 2
Micro BatteryMicro Battery 2
Pill Black White Pill 2
NickelNickel (regular and sticky) 3
Dice ShardDice Shard 4
Lil' BatteryLil' Battery 4
Rune1 Rune (includes Soul Stones) 4 Adds chance of getting a Planetarium item if the bag doesn't contain a PennyPenny, BombBomb, KeyKey, or Red HeartRed Heart. The chance increases by 10× per component.
Soul HeartSoul Heart (full or half) 4
Black HeartBlack Heart 5 Adds a chance of getting a Devil Room item. The chance increases by 10× per component.
Bone HeartBone Heart 5 Adds a chance of getting a Secret Room item. The chance increases by 5× per component.
Charged KeyCharged Key 5
DimeDime 5
Eternal HeartEternal Heart 5 Adds a chance of getting an Angel Room item. The chance increases by 10× per component.
Gold HeartGold Heart 5 Adds a chance of getting a Golden Chest item. The chance increases by 10× per component.
Golden BatteryGolden Battery 7
Golden BombGolden Bomb 7
Golden KeyGolden Key 7
Golden PennyGolden Penny 7
Golden Pill icon Golden Pill 7
Lucky PennyLucky Penny 8
Mega BatteryMega Battery 8
Giga BombGiga Bomb 10
Total Components Quality Resulting Item Quality Range
Special pools Other pools
40+ 35+ 4-4
32-39 27-34 3-4
28-31 23-26 2-4
24-27 19-22 2-3
20-23 15-18 1-2
14-19 9-14 0-2
0-13 0-8 0-1
  • 'Special Pools' are defined for this chart as Angel Room, Devil Room, and Secret Room item pools.

Synergies[ | ]

Interactions[ | ]

  • Butter!Butter!: Bag of Crafting is dropped before pickups can be collected or items crafted.
  • Collectible Car Battery iconCar Battery: No effect.
  • Collectible The Ludovico Technique iconThe Ludovico Technique: Swiping the bag at the Ludovico tear will bat it in the direction of the knockback.
  • Collectible Sacred Orb iconSacred Orb: Sacred Orb prevents crafting quality 1 and 0 items, typically resulting in them being replaced by quality 2 items. If a recipe that can only result in a quality 0-1 item is put in the bag, it will replace the item with Breakfast instead.
  • Wild CardWild Card: Holding up Bag of Crafting counts as an active item use for Wild Card, and can be replicated.

Recipes[ | ]

Bag of Crafting's recipes are based on seed, but there are some fixed recipes that exist in every run.[1] These items need to be unlocked to be crafted.

Pickups Items
Poop Nugget (29) Poop Nugget (29) Poop Nugget (29) Poop Nugget (29)
Poop Nugget (29) Poop Nugget (29) Poop Nugget (29) Poop Nugget (29)
Collectible The Poop iconThe Poop
Penny (8) Penny (8) Penny (8) Penny (8)
Penny (8) Penny (8) Penny (8) Penny (8)
Collectible Portable Slot iconPortable Slot
Red Heart (1) Red Heart (1) Red Heart (1) Red Heart (1)
Red Heart (1) Red Heart (1) Red Heart (1) Red Heart (1)
Collectible Yum Heart iconYum Heart
Soul Heart (2) Soul Heart (2) Soul Heart (2) Soul Heart (2)
Soul Heart (2) Soul Heart (2) Soul Heart (2) Soul Heart (2)
Collectible Soul Locket iconSoul Locket
Black Heart (3) Black Heart (3) Black Heart (3) Black Heart (3)
Black Heart (3) Black Heart (3) Black Heart (3) Black Heart (3)
Collectible Brimstone iconBrimstone
Key (12) Key (12) Key (12) Key (12)
Key (12) Key (12) Key (12) Key (12)
Collectible Latch Key iconLatch Key
Bomb (15) Bomb (15) Bomb (15) Bomb (15)
Bomb (15) Bomb (15) Bomb (15) Bomb (15)
Collectible Mr. Boom iconMr. Boom
Card (21) Card (21) Card (21) Card (21)
Card (21) Card (21) Card (21) Card (21)
Collectible Deck of Cards iconDeck of Cards
Golden Heart (5) Soul Heart (2) Red Heart (1) Eternal Heart (4)
Eternal Heart (4) Eternal Heart (4) Eternal Heart (4) Eternal Heart (4)
Collectible Godhead iconGodhead
Eternal Heart (4) Eternal Heart (4) Eternal Heart (4) Eternal Heart (4)
Eternal Heart (4) Eternal Heart (4) Eternal Heart (4) Eternal Heart (4)
Collectible Sacred Heart iconSacred Heart
Pill (22) Pill (22) Pill (22) Pill (22)
Pill (22) Pill (22) Pill (22) Pill (22)
Collectible PHD iconPHD
Black Heart (3) Pill (22) Pill (22) Pill (22)
Pill (22) Pill (22) Pill (22) Pill (22)
Collectible False PHD iconFalse PHD
Rotten Heart (7) Rotten Heart (7) Red Heart (1) Red Heart (1)
Red Heart (1) Red Heart (1) Red Heart (1) Red Heart (1)
Collectible Yuck Heart iconYuck Heart
Golden Key (13) Golden Key (13) Key (12) Key (12)
Key (12) Key (12) Key (12) Key (12)
Collectible Dad's Key iconDad's Key
Giga Bomb (17) Giga Bomb (17) Giga Bomb (17) Giga Bomb (17)
Giga Bomb (17) Giga Bomb (17) Giga Bomb (17) Giga Bomb (17)
Collectible Mama Mega! iconMama Mega!
Golden Bomb (16) Golden Bomb (16) Bomb (15) Bomb (15)
Bomb (15) Bomb (15) Bomb (15) Bomb (15)
Bone Heart (6) Bone Heart (6) Bone Heart (6) Bone Heart (6)
Bone Heart (6) Bone Heart (6) Bone Heart (6) Bone Heart (6)
Collectible Death Certificate iconDeath Certificate
Dice Shard (24) Dice Shard (24) Dice Shard (24) Dice Shard (24)
Dice Shard (24) Dice Shard (24) Dice Shard (24) Dice Shard (24)
Collectible D infinity iconD infinity
Cracked Key (25) Cracked Key (25) Cracked Key (25) Cracked Key (25)
Cracked Key (25) Cracked Key (25) Cracked Key (25) Cracked Key (25)
Collectible Red Key iconRed Key

Uncraftable Items[ | ]

These items have no recipes and cannot be crafted using the Bag of Crafting.[Check ingame]

In-game Footage[ | ]

Trivia[ | ]

  • There are , or about 30.3 million, combinations of pickups and consumables that can be used in the Bag of Crafting. The item chosen is based on a formula mapping the chosen consumables, item weights, and quality values into a single outcome. On average, about 1/4th of all items will represent over 1/2 of all recipes.
  • The average consumable value is ~4.31.
  • Bag of Crafting's item description hints to Collectible The D6 iconThe D6's item description as well as Character Tainted Cain iconTainted Cain's description, implying that "Destiny" is the items that will appear in a given seed.
  • Bag of Crafting used to have the "nochallenge" and "nodaily" tag instead of the "offensive" tag. The resulting changes now allow it to be encountered on Challenges, Daily Challenges, and by Character Tainted Lost iconTainted Lost.

Bugs[ | ]

Bug Bug! While being controlled by mouse, having both Collectible The Ludovico Technique iconThe Ludovico Technique + Collectible Pop! iconPop! will mess up the direction control of Bag of Crafting.


Bug Bug! In the Cantripped! challenge, using a Bag of Crafting will crash the game.


Bug Bug! If the Bag of Crafting is used but not swung (i.e., is being held overhead) while returning from the Mirrored world, Isaac will not go back to normal, and will still have the properties of Character The Lost iconThe Lost (flying, Collectible Holy Mantle iconHoly Mantle effect) when returning. This effect persists across floors, but Isaac will turn back after some time.

References[ | ]

  1. Fixed recipes are defined in recipes.xml.


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