Jacob's Ladder

Jacob's Ladder is a passive item added in Afterbirth †.

Effects

 * Tears fire 1-2 sparks of electricity in random directions upon hitting an obstacle or enemy.
 * Sparks deal half of Isaac's tear damage.
 * 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.

Synergies

 * //: All tears spawn sparks.
 * //: Additional tears caused by Cricket's Body also create arcs of electricity. The Parasite and Compound Fracture tears have to hit enemies or obstacles to cause sparks.
 * /: Will also fire tears that can spawn sparks.
 * : Sparks can set enemies on fire but won't explode.
 * Homing tears: Enemies are more likely to be hit by both sparks and tears.
 * : Electric arcs happen normally and sparks' damage is massively increased.
 * : Main tears and burst tears can spawn sparks.
 * /: All tears trigger the effects, dealing heavy damage to all enemies in range as long as tears reach a wall, obstacle, or enemy.
 * : Tears block enemy shots as normal and will then generate arcs of electricity where the shot was blocked.
 * : The Ludovico tear spawns a large number of sparks when in contact with an enemy.
 * : Sparks will gain damage based on how far tear has travelled. They will not increase in size and there are no cosmetic changes.
 * : Sparks caused by a perfume shot that arc to other enemies have a chance to cause the fear effect.
 * : Eyeball tears can spawn sparks.
 * : Sparks sometimes poison enemies and generate black hearts.
 * : Will fire tears that can spawn sparks.
 * : Both effects happening simultaneously creates lots of electricity.

Interactions

 * Azazel/: Overrides Jacob's Ladder.
 * : Tears fired from familiar will not be able to spawn sparks.
 * /: Tears will only spawn sparks when hitting obstacles or enemies but not walls.
 * /: Overrides Jacob's Ladder. Bombs do not generate sparks of electricity.
 * /: Sparks created by Evil Eye's tears will hurt Isaac.
 * : Only main tear can spawn sparks.
 * : The tear barrage will spawn sparks when hitting walls, obstacles, or enemies. The, stone however, will only spawn sparks when hitting enemies.
 * : 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.
 * : Spawns sparks of electricity rapidly, but the sparks will deal very little damage.
 * Spectral Tears: Spectral tears make Jacob's Ladder spawn electricity for every obstacle the tears go through. Electricity does not spawn when tears go through room walls.
 * : Overrides Jacob's Ladder.
 * : 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 which serves as the connection between Heaven and Earth.

Bugs
Jacob's Ladder

Seeds
YQ7X M2MW (First floor treasure room) JWG4 24V3 (First floor treasure room) 9ZCZ 9YBG (First floor treasure room) RB16 V4HQ (First floor treasure room)