Bag of Crafting is an unlockable active item in The Binding of Isaac, added in the Repentance DLC.

Upon use, pressing an attack button will cause a swipe attack that deals 3 damage to enemies and knocks them back. The size of the swipe scales with Isaac's size, and is affected by his range.

The swipe can be used to open chests and block projectiles.

Swiping a pickup off the floor will add it to the bag. Up to 8 pickups can be stored in the bag. These pickups cannot be dropped.

Double pickups will add 2 copies of the pickup into the bag.

Pickups can also be collected from the Shop, if Isaac has enough money to buy them first.

Once 8 pickups have been collected, the bag can be used once more to create an item based on the types of pickups (components) collected.

A random recipe is chosen for each item when the run starts. This is seeded per run.

If the bag would grant an item that hasn't been unlocked yet, a random item will be crafted instead.

Some recipes are fixed and exist in every run. Check the GuruWiki page for a full list of fixed recipes.

The crafted item is chosen from one of the following pools:
• 40% → Boss
• 40% → Shop
• 20% → Treasure Room

Pickups added into the bag have different qualities. Some pickups grant a chance to craft an item from a different pool. Check the GuruWiki page for more details.

Based on the overall quality of all components in the bag, the crafted item can be chosen from a special pool (Angel Room, Devil Room, or Secret Room), or other pools based on previously explained criteria.

The overall quality of components in the bag also affects the crafted item's possible quality.

When playing as Tainted Cain
The item that would be crafted is displayed in the bottom-right corner of the screen.

Getting more than 8 pickups in the bag will shift its contents left and up, deleting the top-left slot and adding to the bottom-right.

Tapping the drop key will cycle the bag's contents left and up in a loop. Holding the use button will craft the displayed item.

Crafting an active item while already holding one will turn the old one into pickups, just like collecting it would.

Curse of the Blind! will hide the crafting preview.

This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this item for the previous Repentance version, check this page instead.

Defeat Delirium as Tainted Cain.

Bag of Crafting can be found in the following item pools:

The following tags are applied to this item:

The following special synergies and interactions for Bag of Crafting have been documented.

* Note that not all possible synergies and interactions are listed here.

The following recipes will always grant the same items, if unlocked.
* The order of components is irrelevant.

Below is a table of each pickup's quality, and their added effect, if any.

Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.

Bag of Crafting

• Hold and swing the bag in the direction of choice. The swing gathers pickup items and puts them into the bag, and deals minor damage to enemies
• Once 8 pickups have been collected into the bag, pressing the activation button will consume its contents to spawn 1 pedestal item
• The pickup items collected into the bag will determine its output
• Tainted Cain: Recipes and collected pickups are visible. Tap the drop button to cycle through collected pickups in order to specify which one gets replaced when the bag is full
• Abyss: x1 locust 1.5x Isaac's damage
• Book of Virtues: x1 middle wisp - 2 hp - 3 damage
• Book of Virtues: Random wisp is spawned with each craft

• Check out the item description on the external Isaac Wiki.