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Dad's Red-ray Disc item
Dad's Red-ray Disc is a passive item in Glacier's Laboratory, a mod for The Binding of Isaac.
Description
Spawns a Cracked Key every 5 rooms.
When Isaac enters a new room, a number will be displayed at the top of the screen.
The number usually shows the coordinate of current room in white color.
Upon first pickup or entering a new floor, it instead shows the coordinate of Ultra Secret Room in red color.
Isaac can use these two coordinates to find the whereabouts of Ultra Secret Room.
If Ultra Secret Room doesn't exist on current floor, it displays ERR instead.
Item pools
Dad's Red-ray Disc can be found in the following item pools:
| Name | Weight |
|---|---|
| Curse Room |
0.5/1.0
|
| Secret Room |
1.0/1.0
|
| Ultra Secret Room |
1.0/1.0
|
| Red Chest |
0.5/1.0
|
| Old Chest |
0.5/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| offensive | Can appear for  Tainted Lost. |
| lazarussharedglobal | Passive effects (except direct stat changes) are shared between  Tainted Lazarus' forms. |
| nogreed | Not available in Greed Mode. |
| summonable | Can be summoned via  Lemegeton. |
External links
- Download Glacier's Laboratory from the Steam Workshop.
Twin Core 
Ex Nihilo 2 
The Icicle 
Doomsday Device 9000 
Big Daze 
Glacier Baby