Cosmic Grey Horse is a consumable in Damnation, a mod for The Binding of Isaac.

Does not spawn naturally and can only be obtained by using Unused Draft Paper on Red Chest itempool's items.

On use Grants Curse of Darkness! for the floor.

For the rest of the run, enemies under curse of darkness will take 10 non-lethal damage per second.

Every use will increase the value in green by 1 for the entire run.

The following special synergies and interactions for Cosmic Grey Horse have been documented.

* Note that not all possible synergies and interactions are listed here.

• Download Damnation from the Steam Workshop.