Guppy's Tail - The Binding of Isaac

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Guppy's Tail is a passive item in The Binding of Isaac.

Grants a 33% chance of replacing room clear rewards with a Chest or a Locked Chest.

Grants a 22% chance to replace the room clear reward with nothing.

Due to these effects, keys become more scarce as they can often times be replaced with Locked Chests.

This page shows information as of the latest Repentance release.
To see latest up-to date information about this item for the new Repentance+ (Online Co-op) DLC, check this page instead.

This item contributes towards the Guppy transformation. Collecting 3 items from this set will grant Isaac flight and spawn a Blue Fly 66% of the time when a tear hits an enemy.

Guppy's Tail can be found in the following item pools:

Name	Weight
Devil Room	1.0/1.0
Red Chest	1.0/1.0
Curse Room	1.0/1.0

The following tags are applied to this item:

Id	Description
summonable	Can be summoned via Lemegeton.
dead	Contributes towards unlocking The Parasite.
guppy	Contributes towards the Guppy transformation.
offensive	Can appear for Tainted Lost.