Multidimensional Baby

Multidimensional Baby is a passive item added in The Binding of Isaac: Afterbirth.

Effects

 * Spawns a familiar that follows Isaac's path with a 2-second delay.
 * The delay is 0.66 seconds instead.
 * When a friendly tear passes through Multidimensional Baby, the tear splits into two parallel tears that gain a 1.33x speed boost, +4 shot height, and also a visual black and white flashing effect.

Synergies

 * If a revelation laser is shot through the baby, it will double the laser.
 * If a brimstone laser is shot through the baby, it will double the laser.
 * 's short-ranged Brimstone attack will also be "fired again" from the baby, increasing the range.
 * /: Tears that pass through Multidimensional Baby will duplicate and their split tears will duplicate. Half of the tears fired through Multidimensional Baby retain The Parasite's look and the other half have the flashing appearance.
 * : Haemolacria shots will be duplicated and more burst tears will spawn. Burst tears that pass through Multidimensional Baby will also be duplicated.
 * Shooting familiars: Duplicates familiar's tears.
 * : Tears fired by the sprinkler can be duplicated.
 * : When the laser passes through Multidimensional Baby, it doubles the laser.

Interactions

 * ???'s Soul//: Familiar tears will be duplicated if they pass through the baby. However, due to their independent movement pattern, it can be hard to achieve duplication.
 * : Multidimensional Baby will travel the same path as the Anti-Gravity tears, easily doubling any stationary shots. Any moving tears that hit it will produce a normal moving copy, however stationary tears will spawn a copy that will eventually fall to the ground even after the direction is released.
 * Stationary duplicated tears will release normally.
 * Baby-Bender: No effect as Multidimensional Baby only duplicates Isaac's tears.
 * : The baby is larger, but tears shot through it will not do more damage.
 * : Each copy of Multidimensional Baby follows the previous copy with a 2-second delay. Tears shot through multiple babies will only be duplicated once.
 * : Tears that pass through Multidimensional Baby will be duplicated and cosmetically look like normal tears. Bone shards will not duplicate unless they pass through Multidimensional Baby separately.
 * : No effect.
 * : No effect.
 * makes it more easy to use Multidimensional Baby, as Isaac can simply stand while the familiar stays on top of him.
 * : Duplicates tears, which tend to merge after traveling a certain distance, making it easier to feed tears. Burst tears can only be duplicated if the tear they come from didn't pass through the baby already.
 * /: Familiar lasers that pass through the baby will not be duplicated.
 * : Spawns another tear that will slowly follow Isaac but cannot be controlled.
 * : No effect.
 * : No effect.
 * : No effect.

Trivia

 * The way the tear splits resembles stimulated light emission.
 * In the initial release of The Binding of Isaac: Afterbirth, the flashing effect that Multidimensional Baby gave tears was much more intense, and made some players feel nauseous. This was changed in version v1.06.0052.

Seeds
3BGY TK8J (Treasure Room adjacent to spawn)