When an enemy comes in contact with the halo, a beam of light starts to form above them. If they stay in the halo for about a second, a beam of light will strike down on them, dealing 3.5 damage and creating 4 more beams that shoot out in all cardinal directions.
The initial beam of light does 3.5 damage per tick (up to 15 times) and the others deal 1.75 damage per tick (up to 15 times).
If an enemy is standing in the center of all the light beams, they will take a total of 152.5 damage.
Each time Isaac takes damage, the halo will grow in size, up to a maximum of 10 times. The halo size will reset after leaving the floor.
This item belongs to the Seraphim set. Collecting three items from this set will transform Isaac into an angel.
Gnawed Leaf: The light beams trigger even when Isaac is a statue.
The item resembles the Icthys symbol, which was a symbol used by early Christians, and is associated with Jesus Christ.
The halo produced by the item resembles Jesus' Crown of Thorns, and the filename for the effect's graphics is halo_thorns.png.
Dogma and its television will have a wavy and distorted appearance while in range of Salvation.
Salvation is especially effective against segmented bosses, as each segment can be targetted by an initial beam, and the cardinal beams deal extra damage by damaging other segments.