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Boulder Trap item
Boulder Trap is a passive item in Reverie, a mod for The Binding of Isaac.
Description
Spawns a trapped pressure plate in rooms with enemies. The traps can be triggered by either enemies or Isaac himself.
When the pressure plate is triggered, a rolling boulder spawns, dealing damage to enemies. The amount is 150 + 60 × CurrentFloor per second.
The boulder breaks after colliding 7 times.
Transformations
Item pools
Boulder Trap can be found in the following item pools:
| Name | Weight |
|---|---|
| Treasure Room |
1.0/1.0
|
| Secret Room |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| offensive | Can appear for  Tainted Lost. |
| summonable | Can be summoned via  Lemegeton. |
| nogreed | Not available in Greed Mode. |
| nocantrip | Not available as card effects during the Cantripped! challenge. |
Special synergies
The following special synergies and interactions for Boulder Trap have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Rubber Cement | Spawns a super-bouncy boulder which breaks after colliding 15 times. |
| --- | Luna | Spawns a moon boulder that deals 3x damage. |
| --- | Candy Heart | Spawns a life crystal boulder that spawns a  Heart upon breaking. |
| --- | Tooth and Nail | Spawns a cactus that shoots spikes upon collision. |
| Reverie | Boulder Trap | Spawns one more pressure plate for each extra Boulder Trap. |
| Reverie | Lost Memory | Character: Son Biten |
* Note that not all possible synergies and interactions are listed here.
External links
- Check out the item description on the mod's external Wiki.
- Download Reverie from the Steam Workshop.
Fortunate Fox 
Rainbow Card 
Ghostly Lamp 
Cerberus' Bowls 
Mohgwyn's Spear 
Lost Memory