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The Twins trinket
The Twins is an unlockable trinket in The Binding of Isaac, added in the Repentance DLC.
Description
Entering a room has a 50% chance to duplicate one of Isaac's familiars.
If Isaac has no familiars, it spawns Brother Bobby or Sister Maggy instead.
Has a 1% chance of being dropped upon defeating Horny Boys.
Note
This page shows the latest information as of the new Repentance+ (Online Co-op) DLC.
To see information about this trinket for the previous Repentance version, check this page instead.
How to unlock?
Defeat Isaac, ???, Satan, and The Lamb as 
Tainted Lilith.
Special synergies
The following special synergies and interactions for The Twins have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Trinket multipliers | Grants an additional +50% chance for the effect to trigger, which is independent from the other one. This means that more than one familiar can spawn or be duplicated. |
* Note that not all possible synergies and interactions are listed here.
Internal item description
Below is the Internal Item Description as shown in-game.
Note that some stat changes are not displayed here. Please see the main description for the full effects.
The Twins
• 50% chance to duplicate a familiar on entering a room
• Golden Trinket (without Mom's Box): 50% chance to duplicate 1-2 familiars on entering a room
• Mom's Box: 50% chance to duplicate 1-2 familiars on entering a room
• Mom's Box + Golden Trinket: Spawns 2 sacks at the beginning of each floor
• If Isaac has no familiars, will grant Brother Bobby or Sister Maggy instead
External links
- Check out the trinket description on the external Isaac Wiki.
Found Soul 
Expansion Pack 
Beth's Essence 
Adoption Papers 
Cricket Leg 
Apollyon's Best Friend