Jar of Flies - Item Cheat Sheet, ID, & Description

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Description	Every time Isaac kills an enemy, a fly will be added to the jar, up to a maximum of 20. Using the Jar of Flies will release all the flies that are currently in the jar as friendly blue flies that will damage enemies.
Quote	Gotta catch 'em all?
Item ID	434
Icon	Jar of Flies
Use	Unlimited
Category	Activated Collectible
DLC Required	Afterbirth

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Item ID: 487
Icon: Potato Peeler
Description: Removes a heart container, increases damage and range, and grants a Cube of Meat.

Potato Peeler

Item ID: 35
Icon: The Necronomicon
Description: Damages all enemies in the room significantly.

The Necronomicon

Item ID: 47
Icon: Doctor's Remote
Description: Sets a big red target on the ground (similar to the Epic Fetus item) which can be controlled with tear controls. After 6 seconds or by pressing space again, a huge explosive missile hits it, which damages all enemies caught in its blast radius.

Doctor's Remote

Item ID: 289
Icon: Red Candle
Description: Throws a persistent flame that deals high damage and diminishes as it damages enemies or blocks shots.

Red Candle

Item ID: 133
Icon: Guppy's Paw
Description: Removes one red heart container in exchange for gaining 3 Soul Hearts.

Guppy's Paw

Item ID: 36
Icon: The Poop
Description: Spawns a pile of poop where the character is standing and knocks nearby monsters back. May yield pickups like regular poop.

The Poop

Item ID: 288
Icon: Box of Spiders
Description: Summons 2-4 blue spiders.

Box of Spiders

Item ID: 552
Icon: Mom's Shovel
Description: Spawns a trapdoor that leads to the next floor upon activation. Unlocks The Forgotten when used on a mound of dirt that appears in The Dark Room.

Mom's Shovel

Item ID: 175
Icon: Dad's Key
Description: Opens all doors in the current room when activated, including doors which require a key to open and entrances to secret rooms. Opens the big doors in the first room of both The Chest and the Dark Room.

Dad's Key

Item ID: 396
Icon: Ventricle Razor
Description: Can be used to place an orange portal and a blue portal. Upon entering a portal, Isaac is teleported to the other portal.

Ventricle Razor

Item ID: 516
Icon: Sprinkler
Description: Upon use, spawns a sprinkler that rotates and fires tears.

Sprinkler

Item ID: 382
Icon: Friendly Ball
Description: Throwing the ball at an enemy instantly kills it and captures it. The captured enemy can later be released and will be charmed until it dies, persisting between floors.

Friendly Ball

Item ID: 146
Icon: Prayer Card
Description: Grants an eternal heart per use.

Prayer Card

Item ID: 298
Icon: Unicorn Stump
Description: Upon use, grants invulnerability and increased speed for five seconds, but removes the ability to shoot tears.

Unicorn Stump

Item ID: 171
Icon: Spider Butt
Description: Damages all enemies in the room and slows them and their projectiles down.

Spider Butt

Item ID: 37
Icon: Mr. Boom
Description: Drops a large bomb.

Mr. Boom

Item ID: 123
Icon: Monster Manual
Description: Summons a random familiar for the current room. Can summon familiars not yet unlocked.

Monster Manual

Item ID: 338
Icon: The Boomerang
Description: Throws a short-range boomerang which does a bit of damage and has a high chance to stun the enemy for 2 seconds. Can also be used to grab pickups.

The Boomerang

Item ID: 476
Icon: D1
Description: Duplicates a random pickup in the room.

Item ID: 348
Icon: Placebo
Description: When used, copies the effect of the pill Isaac is currently holding without consuming it. Does not copy the effects of cards or runes.

Placebo

Item ID: 441
Icon: Mega Blast
Description: Upon use, Isaac fires a laser similar to the one used by Mega Satan. This laser deals massive damage, lasts for approximately 15 seconds, and persists between rooms. Isaac is pushed backwards by the force of the laser while it is active.

Mega Blast

Item ID: 137
Icon: Remote Detonator
Description: Bombs you place explode only when you use this item. Gives 5 bombs.

Remote Detonator

Item ID: 439
Icon: Mom's Box
Description: When used, Mom's Box will drop a random trinket on the ground. While held, increases luck by 1 and doubles the effects of trinkets.

Mom's Box

Item ID: 485
Icon: Crooked Penny
Description: Spawns a penny and has a 50% chance to double all items and pickups in the room. If the effect fails, the items and pickups disappear.

Crooked Penny

Item ID: 351
Icon: Mega Bean
Description: When used, the Mega Bean will freeze all enemies in the current room for a couple of seconds, deal 5 damage and poison any enemies near Isaac, and send a wave of spikes that deals 10 damage across the room in the direction Isaac is facing.

Mega Bean

Item ID: 550
Icon: Broken Shovel
Description: While held, causes multiple Mom's Foots to come down and stomp on Isaac. One of two parts necessary to create Mom's Shovel.

Broken Shovel

Item ID: 177
Icon: Portable Slot
Description: Upon activation, 1 coin will be consumed, and a random pickup may drop, similar to the slot machine.

Portable Slot

Item ID: 480
Icon: Compost
Description: Spawns a blue spider or fly. Turns pickups in the room into blue spiders or flies.

Compost

Item ID: 34
Icon: The Book of Belial
Description: Upon use increases damage by 2 for the current room and by a further +50% if the character also has the Blood of the Martyr.

The Book of Belial

Item ID: 483
Icon: Mama Mega!
Description: Damages all enemies and destroys all obstacles. The effect occurs every time a new room is entered for the rest of the floor. Opens doors to the floor's secret and super secret rooms.

Mama Mega!

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Item: Jar of Flies

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