Jacob's Ladder

Jacob's Ladder is a passive item added in The Binding of Isaac: Afterbirth †.

Effects

 * Tears fire 1-2 sparks of electricity in random directions upon hitting an obstacle or enemy.
 * Tears fire 1 short-ranged spark of electricity in a random direction upon hitting an obstacle or enemy. When an arc strikes an enemy, it will strike another nearby enemy, chaining up to four times.
 * Sparks deal half of the tear's damage (Isaac's current damage stat).
 * Sparks behave like spectral homing lasers and will arc to hit enemies that are close enough, even striking multiple ones in a row.
 * Tears that hit the floor due to running out of range do not generate arcs.
 * If the floor is wet, such as, , , some rooms in and after using , the arcing distance is increased.

Synergies

 * All status causing tear effects: The status effects will be applied over the electric arcs as well. The poison caused by will not drop black hearts.
 * Electric arcs coming off of needle shots act also act as needle shots themselves, allowing entire rooms to be killed instantly.
 * / Nose Goblin: A booger tear that strikes an enemy will also apply a booger to each enemy that gets hit by an electric arc.
 * : All of the split tears will be electrified. Also, electric arcs that pass through the prism will be split.
 * /: The beam gains a light blue tint and generates sparks.
 * : Tears block enemy shots as normal and will then generate arcs of electricity where the shot was blocked.
 * : Sparks deal damage based the tear's, increasing with distance. No extra damage is applied by the distance covered by the spark.
 * : The knife will occasionally generate sparks when hitting an enemy.
 * Spectral tears: The tears can spawn sparks while passing through obstacles.
 * / /  / : Lasers gain a light blue tint and generate sparks.

Interactions

 * / : Overrides Jacob's Ladder.
 * : Electric arcs cannot hit the enemies' backs for the extra damage and bleeding.
 * / : Although the scatter effect increases the amount of arcing, the split tears deal lesser damage and as such, less damage on their sparks.
 * / : Bombs do not generate sparks.
 * : Only main tear can spawn sparks.
 * : Electric arcs happen only when they hit a wall.
 * : The Ludovico tear spawns a large number of sparks when in contact with an enemy, but not on obstacles.
 * : Overrides Jacob's Ladder.
 * : Sparks will decrease in damage based on how much damage the tear has lost.
 * : Tears will only spawn sparks when hitting enemies.
 * : Both the sword swing and sword shots will create electricity.
 * / /  / : Overrides Jacob's Ladder.
 * : Only spawns sparks when hitting obstacles.

Trivia

 * This item refers to high voltage traveling arcs, which are colloquially known as Jacob's ladders. It creates a small electric arc rising between two metal rods, as the item graphic represents.
 * The name is a reference to The Book of Genesis from the Old Testament. In Genesis 28:10-19 Jacob rests on his journey and has a dream; in the dream, he sees a ladder that serves as the connection between Heaven and Earth.
 * This item's new effect closely resembles from Antibirth, which was added to the game with a different effect.
 * was originally named Jacob's Ladder in Antibirth. It was renamed when being ported to avoid a naming conflict.

Seeds
9ZXL TW0W (Treasure room adjacent to spawn) RB16 V4HQ (First floor Treasure Room)