Finger!

Finger! is a passive item added in Afterbirth †.

Effect

 * Grants Isaac a floating finger familiar that can be aimed with the fire buttons.
 * The finger fires invisible spectral lasers dealing 10% of Isaac's normal damage. The laser fires continuously.
 * While not being aimed with the fire buttons, the finger points in the direction of movement or downwards if standing still.

Synergies

 * : The finger has a chance to poison enemies it points at.
 * : Electricity will occasionally connect the finger and Isaac.
 * : Finger will apply burning damage to enemies.
 * Guppy - Flies are generated from the damage the finger does.
 * : The finger gains massive damage boost and can poison enemies.
 * : The finger has a chance to freeze any enemies it's pointing at.
 * : Roughly triples finger's damage.
 * : Almost doubles finger's damage. Has no damage penalty with range.
 * : More than doubles finger's damage.
 * : The finger has a high chance to slow down enemies it points at.
 * : Doubles the finger accordingly.

Interactions

 * : Increases finger's size, however, does not increase finger's damage.
 * : Only increases damage.
 * Homing tears: The finger laser does not become homing.
 * : No effect on the finger's damage.
 * : Only minorly increases finger's damage. Damage multiplier still applies.
 * : While actively aiming, the finger behaves as normal and while fire keys are not pressed, it points towards the targeting crosshair.
 * : Cuts damage to 1/4 of normal.
 * : Reduces finger's damage.
 * : When not firing, the finger will point towards the nearest cardinal direction as where the shield is left. This favors the vertical directions when the shield is at a 45° angle.
 * : No effect on finger's damage.

Trivia

 * This item is a reference to Fingered!, one of Edmund's other games.