Boulder Trap - The Binding of Isaac

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Boulder Trap is a passive item in Reverie, a mod for The Binding of Isaac.

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.

This item contributes towards the Stoney transformation. Collecting 3 items from this set will grant Isaac immunity to crush damages such as Mom's feet and rock waves.

Boulder Trap can be found in the following item pools:

Name	Weight
Treasure Room	1.0/1.0
Secret Room	1.0/1.0

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.

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