Sacrificial Altar is an unlockable active item in The Binding of Isaac, added in the Afterbirth+ DLC.
Sacrifices up to 2 of Isaac's familiars chosen at random, and spawns an item from a preset devil-deal-like list for each of them.
Converts specific familiars:
• Blue Flies, Blue Spiders, Clots, Locusts, Friendly Dips and Minisaacs into Pennies
• Book of Virtues wisps into Half Hearts
• Lemegeton wisps into Half Soul Hearts
Causes a brief Curse of Darkness!.
Cannot sacrifice Incubus when playing as Lilith.
Can sacrifice familiars granted from trinkets, destroying the trinket in the process.
If an angelic familiar is sacrificed ( Guardian Angel / Seraphim / Sworn Protector), 2 Black Hearts will drop as well.
If Isaac already has all items that can be spawned, it will instead spawn 1-2 copies of Pentagram.
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.
Take 50 Deals with the Devil.
Sacrificial Altar can be found in the following item pools:
Name | Weight |
---|---|
Devil Room |
1.0/1.0
|
Curse Room |
1.0/1.0
|
Greed Curse Room |
1.0/1.0
|
Greed Devil Room |
1.0/1.0
|
The following tags are applied to this item:
Id | Description |
---|---|
offensive | Can appear for ![]() |
nocantrip | Not available as card effects during the Cantripped! challenge. |
The following special synergies and interactions for Sacrificial Altar have been documented.
Mod | Item | Synergy |
---|---|---|
--- | Book of Virtues | Spawns 1 red and 1 black wisp after the sacrifice. |
--- | The Book of Belial combined with Judas' Birthright | +10.8 temporary damage up for every sacrificed familiar. |
* Note that not all possible synergies and interactions are listed here.