Dice Bag

Effects

Has a 50% chance to give Isaac a one-time use Dice item in a consumable slot when he enters a new room. The dice disappears when he leaves the room.
- This doesn't replace any consumables Isaac already has.

If Isaac leaves and re-enters a room, Dice Bag will not try to give another die when Isaac re-enters it.
The dice given are determined by the amount of rooms cleared, and are not actually tied to specific rooms.
Any die can be given to Isaac, including ones that haven't been unlocked yet.
Dice Bag cannot give (Spindown Dice) Spindown Dice, (D Infinity) D Infinity, Cracked Dice, or (Dice Shard) Dice Shard.
Dropping the trinket on the ground does not remove the die until Isaac leaves the room.

Butter!: Taking damage has a chance to drop the current die as a pedestal item, allowing you to keep it forever.
(Golden Trinket) Golden Trinket / (Mom's Box) Mom's Box: Increases the chance to get a die to 100%.
(Moving Box) Moving Box: Can be used to hold undesirable items and pickups until Dice Bag grants a consumable that can reroll them.

(Car Battery) Car Battery: No effect.
(Glowing Hour Glass) Glowing Hour Glass: The die given in the room Isaac used Glowing Hour Glass in will be granted in the next new room Isaac visits, regardless of what it is.
(Jacob and Esau) Jacob and Esau: Regardless of who is holding the die, it is activated by pressing the consumable key. If Esau is holding an active item, it will be used at the same time as the die. Possibly unintended behavior.