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Heaven's Call
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Retrograde Mercurius item
Retrograde Mercurius is a passive item in Heaven's Call, a mod for The Binding of Isaac.
Description
Grants flight.
Adds a 7% chance to shoot bismuth tears that spawn Minisaacs when they kill an enemy; this chance goes up to 50% with 6 luck.
Grants a 5% chance to trigger the My Little Unicorn effect upon entering a new room.
+0.23 speed.
Item pools
Retrograde Mercurius can be found in the following item pools:
| Name | Weight |
|---|---|
| Ultra Secret Room |
1.0/1.0
|
Tags
The following tags are applied to this item:
| Id | Description |
|---|---|
| stars | Contributes towards unlocking Planetariums. |
| offensive | Can appear for  Tainted Lost. |
| summonable | Can be summoned via  Lemegeton. |
Special synergies
The following special synergies and interactions for Retrograde Mercurius have been documented.
| Mod | Item | Synergy |
|---|---|---|
| --- | Mom's Knife | The knife will be converted to a bismuth one, this change is only cosmetic. |
* Note that not all possible synergies and interactions are listed here.
External links
- Download Heaven's Call from the Steam Workshop.
Retrograde Venus 
Retrograde Terra 
Retrograde Mars