Old Calculator is an active item in Daydream all Day, a mod for The Binding of Isaac.
On pickup
Grants a full extra charge.
On use
There are 2 possibilities:
• If succeeded, gives all items that cost money in the current room a discount. Does not consume charges.
• If failed, loses all discounts and takes 1 charge from the item.
100% chance to succeed if no discount from this item exists in this room.
The more discounts from this item exist in the current room, the less chance this item will succeed.
The chance to succeed cannot go below 80%.
Old Calculator can be found in the following item pools:
Name | Weight |
---|---|
Treasure Room |
1.0/1.0
|
Crane Game |
1.0/1.0
|
Greed Shop |
0.5/1.0
|
The following tags are applied to this item:
Id | Description |
---|---|
offensive | Can appear for ![]() |
nocantrip | Not available as card effects during the Cantripped! challenge. |
The following special synergies and interactions for Old Calculator have been documented.
Mod | Item | Synergy |
---|---|---|
--- | Book of Virtues | If succeeded, spawns 1 coin wisp. If failed, loses all coin wisps. |
--- | The Book of Belial combined with Judas' Birthright | Spawns 1 Nickel if failed. |
--- | Car Battery | Higher chance to succeed. |
* Note that not all possible synergies and interactions are listed here.