Item: Kidney Stone

Item

Description Randomly while firing tears, Isaac will stop firing and turn red, where he will charge and release a lot of 'tears' in one go. In the burst of tears is a kidney stone which deals a lot of damage.
Quote Matt's kidney stone
Item ID440
Icon Kidney Stone
Category Possive Collectible
DLC Required Afterbirth
Item ID
Icon
Description

Shade

468
Shade
Spawns a shadow familiar that follows Isaac's movements on a 1 second delay and deals contact damage to enemies.
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The Peeper

155
The Peeper
Spawns a familiar that floats slowly around the room on a zig-zag pattern similar to Boom Fliesdamaging enemies it passes through.
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Abaddon

230
Abaddon
Increases damage and speed, removes all red heart containers, grants six black hearts, and adds a chance to shoot fear tears.
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Caffeine Pill

340
Caffeine Pill
Increases speed and reduces character size. Also gives a random pill.
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Scapular

142
Scapular
Once per room, when Isaac is reduced to his last half red Heart, the aura around his head temporarily vanishes and he is granted one Soul Heart.
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Schoolbag

534
Schoolbag
Allows Isaac to hold two active items.
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Thunder Thighs

314
Thunder Thighs
Destroys rocks upon contact with Isaac. Adds one heart container and lowers Speed.
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Depression

469
Depression
Spawns a cloud familiar that leaves a trail of tears that damages enemies. Has a chance to spawn damaging beams of light onto enemies that touch the cloud.
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Kidney Stone

440
Kidney Stone
Randomly while firing tears, Isaac will stop firing and turn red, where he will charge and release a lot of 'tears' in one go. In the burst of tears is a kidney stone which deals a lot of damage.
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Super Bandage

92
Super Bandage
Grants one Heart Container and gives 2 Soul Hearts.
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Epic Fetus

168
Epic Fetus
Isaac's tears are replaced with guided missiles, like those used by the Doctor's Remote.
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Eve's Mascara

310
Eve's Mascara
Doubles damage, halves tears stat, and greatly reduces shot speed.
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Dark Bum

278
Dark Bum
Spawns a familiar that follows Isaac around and collects red hearts. For every one-and-a-half red hearts collected, Dark Bum will generate one soul heart, one hostile Spider or one friendly blue spider.
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Whore of Babylon

122
Whore of Babylon
Increases damage and speed whenever Isaac has half a red heart or less (one red heart for Eve), ignoring any soul or black hearts.
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Isaac's Heart

276
Isaac's Heart
Isaac himself is now immune to all damage, and a heart familiar appears and follows Isaac. If the heart is hurt, Isaac is hurt.
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The Body

334
The Body
Adds 3 heart containers.
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Farting Baby

404
Farting Baby
A familiar that follows Isaac and blocks tears. If a tear hits Farting Baby, there is a high chance for it to fart, which will either knock back, poison, or charm all nearby enemies.
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PJs

428
PJs
Grants four soul hearts and fully restores Isaac's red health.
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Robo-Baby 2.0

267
Robo-Baby 2.0
Fires lasers at any enemy in its line of sight and moves based on the direction Isaac is firing tears.
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The Polaroid

327
The Polaroid
If the character has half a red heart or no red hearts after taking damage, it triggers the Book Of Shadows effect, creating a shield that nullifies all types of damage for 5 seconds. Also allows entrance into The Chest.
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