Butter!

Complete 2 Victory Laps and start a 3rdButter!

Butter! is an unlockable trinket added in Booster Pack #1.

Effects

• Using an active item will drop it onto a pedestal on the ground.
• When Isaac takes damage, there is a 2% chance one of Isaac's passive items will drop on the ground.

Synergies

• VoidConsumes all pedestal items in the room. Active items will have their effects added to Void, and passive items will grant stat upgrades.: Items that are normally unusable when holding Butter! can still activate their effects if absorbed by Void.

Interactions

• Consumable actives: Active items that remove themselves upon use do not drop and are consumed as normal.
• Controllable actives: Active items that require additional input to control after being used (like The CandleThrows out a blue flame that can pass over gaps (but not through rocks). The flame damages anything in its path. or Breath of LifeGrants a brief moment of invincibility when the charge bar hits zero. If spacebar is held for an additional second after hitting zero, Isaac will take damage.) create no effect and are dropped on the ground. They retain charge when picked up.
• Familiar spawning actives: Active items that spawn blue flies, blue spiders, or items like Monster ManualSummons a random familiar for the current room. Can summon familiars not yet unlocked. will spawn those familiars before dropping.
  • This applies to active items that spawn pickups.
• Glowing Hour GlassWhen used, this item will rewind time, put Isaac back in the previous room, and undo anything that happened in the current room. Any health, pickups, or items gained or lost will be reset back to the previous state.: Is removed from Isaac and dropped, but is given back to Isaac discharged upon going back in time into the previous room. The room in which Glowing Hour Glass was used will not contain another Glowing Hour Glass.
• How to JumpGives Isaac the ability to jump (over gaps, spikes, etc.).: Isaac animates a jump but his movement remains normal and he cannot go over any obstacles.
• MetronomeGrants a random item effect for the current room.: Effect from the Metronome is immediately canceled beyond the gain of hearts, coins, bombs, or keys. Visual effects may persist until leaving the room.
• Razor BladeUpon use, deals one heart of damage to Isaac and grants +1.2 damage for the current room.: Deals damage to Isaac as normal but does not increase damage for the current room.

No Effect

Butter! will immediately cancel the effects of and discharge these active items when dropped, unless they are consumed with VoidConsumes all pedestal items in the room. Active items will have their effects added to Void, and passive items will grant stat upgrades..

• Anarchist CookbookSpawns six troll bombs around the room.
• Black HoleThrows a black hole on the ground which sucks in and damages enemies.
• The Book of BelialUpon use increases damage by 2 for the current room and by a further +50% if the character also has the Blood of the Martyr.
  Guarantees a Devil Room or Angel Room will be open after beating a boss while holding it, or increases the chance by 12.5%.
• The BoomerangThrows 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.
• Breath of LifeGrants a brief moment of invincibility when the charge bar hits zero. If spacebar is held for an additional second after hitting zero, Isaac will take damage.
• Brown NuggetSpawns a stationary fly familiar that fires tears at nearby enemies.
• Crack the SkySummons multiple beams of light in random locations around the room, dealing a large amount of damage to any enemy that touches them.
• D InfinityGrants a random dice item that changes each use.
• Doctor's RemoteSets 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.
• Friendly BallThrowing the ball at an enemy instantly kills it and captures it. The captured enemy can later be released and will be friendly, fighting for Isaac and persisting between rooms.
• The GamekidUpon use, turns the character into a into a Pac-Man-like creature for 5 seconds, granting invulnerability, inflicting fear on all enemies, and replenishing half a red heart container for every two enemies killed.
• Glass CannonWhen used, reduces Isaac's health to half a heart (including soul and black hearts) and fires one large piercing spectral tear that does a lot of damage. The damage done by Glass Cannon scales with Isaac's damage (at base damage it does 45 damage).
• The HourglassUpon activation, enemies and their projectiles are slowed down for a short duration.
• My Little UnicornUpon use, grants invulnerability and increased speed for five seconds, removing the ability to shoot tears and replacing it with the ability to deal contact damage to enemies.
• The NailAdds one soul heart and allows the breaking of rocks and damaging enemies by simply walking over them. Increases damage and decreases speed. All effects except for the Soul Heart wear off upon leaving the room.
• Notched AxeIsaac holds the axe above his head for as long as the spacebar button is held (or until he leaves the room). While holding the axe, Isaac can break any rock he touches, but cannot attack or pick up other items.
• PauseFreezes all enemies until a fire button is pressed.
• A PonyPassively grants flight and increased speed. Upon use, Isaac charges in the direction the pony is facing, becoming invulnerable during the charge and damaging enemies.
• ScissorsUpon use, turns Isaac's head into a stationary familiar for the current room which fires normal tears that deal 3.5 damage.
• Shoop Da Whoop!Fires a laser from Isaac's mouth.
• SprinklerUpon use, spawns a sprinkler that rotates and fires tears.
• Telepathy for DummiesUpon activation, grants homing tears for the current room.
• Unicorn StumpUpon use, grants invulnerability and increased speed for five seconds, but removes the ability to shoot tears.
• White PonyPassively grants flight and increased speed. Upon use, Isaac charges in the direction the pony is facing, becoming invulnerable during the charge and damaging enemies while also casting the effect of Crack the Sky.
• Wooden NickelWhen used, has a 50% chance to drop one random type of coin (penny, nickel, or dime).

Trivia

• Butter! was made by Florian Himsl (developer and programmer of the original The Binding of Isaac game).

Gallery

• 

  Butter!'s appearance prior to Booster Pack #4.

Bugs

• Bug! When using The Pinking ShearsSeparates Isaac's head and body for the current room. Isaac's head, which now has flight, will be under the player's control, while his body will seek out enemies to attack by contact damage. with Butter, only the head is spawn and its effect is very similar to TranscendenceGrants flight..

Active Item Modifiers

Items:

• The BatteryActivated Items can be "overcharged" to allow for an additional use.
• Car BatteryCauses Isaac's activated item to activate twice on each use.
• Sharp PlugUsing an activated item while it's not charged will charge it and Sharp Plug does 2 full heart damage to Isaac.
• VoidConsumes all pedestal items in the room. Active items will have their effects added to Void, and passive items will grant stat upgrades.

Trinkets:

• Broken RemoteTriggers the Teleport effect whenever an activated item is used.
• Butter!Using an active item will drop it onto a pedestal on the ground. Taking damage may result in dropping a passive item.
• Dim BulbProvides a boost to all stats when Isaac's active item is completely uncharged.
• Vibrant BulbProvides a boost to all stats when Isaac's active item is fully charged.

Cards:

• ? CardWhen used, copies the effect of Isaac's currently held activated collectible item.

Booster Packs
#1	Angry Fly Spawns a fly familiar that orbits around a random enemy and deals 5 damage per tick to enemies it comes in contact with. Black Hole Throws a black hole on the ground which sucks in and damages enemies. Bozo Increases damage by a flat 0.1 and grants a soul heart. Enemies can randomly become briefly charmed or feared. Taking damage has a chance to spawn a rainbow poop. Broken Modem Enemies, enemy shots, tears, and pickups will briefly freeze in place at random intervals. Mystery Gift Upon use, spawns a random item from the current room's item pool, with a chance to spawn A Lump of Coal or The Poop instead. Sprinkler Upon use, spawns a sprinkler that rotates and fires tears. Fast Bombs Grants 7 bombs and allows bombs to be placed rapidly. Buddy in a Box Grants a familiar with a random tear effect. The familiar is randomized at the start of each floor. Lil Delirium Grants a familiar that transforms into another random familiar every 10 seconds. HairpinFully recharges Isaac's active item upon entering a boss fight. Wooden CrossGrants a Holy Mantle shield upon entering a new floor, which protects against one hit of damage. Butter!Using an active item will drop it onto a pedestal on the ground. Taking damage may result in dropping a passive item. Huge GrowthMakes Isaac large for the current room, increasing his range and damage. Ancient RecallSpawns 3 random cards. Era WalkFor the current room, enemies are slowed, Isaac's speed is increased, and his shot speed is decreased.
#2	Jumper Cables Grants an active item charge every 15 enemies killed. Coupon Upon use, makes a random item from a shop, devil deal, or black market free. Telekinesis Upon use, for the next two seconds, any enemy shots that come near Isaac are held in place. After the charge is depleted, they are fired back as tears. Moving Box If the box is empty, picks up all items and pickups in a room and stores them. If the box is not empty, places all stored items and pickups in the current room. Technology Zero Connects Isaac's tears with electricity that can damage enemies. Leprosy Upon taking damage, grants a body part as an orbital, which blocks enemy shots and deals 7 damage per tick to enemies it comes in contact with. The orbitals will be destroyed if they take enough damage from enemies or enemy shots. Filigree FeatherAngels drop items instead of key pieces when defeated.
#3	7 Seals Grants a random Harbinger familiar that changes every 10 seconds. Mr. ME! Summons a controllable ghost that can perform various tasks depending on what it targets. Angelic Prism Grants a prism orbital with a large orbital radius. Tears that pass through the prism split into four multi-colored tears. Pop! Replaces Isaac's tears with eyeballs that can bounce off of each other. The eyeballs are not limited by range, and will instead dissipate when they stop moving or when hitting an enemy or obstacle. Door StopThe last door Isaac went through stays open, allowing him to leave the room even if enemies are in it.
#4	Death's List Grants a reward if all enemies in a room are killed in the order they are marked. Haemolacria Tears are now fired in an arc. Upon hitting the floor, an obstacle, or an enemy, they burst into many smaller tears in all directions. Increases tear delay. Lachryphagy Isaac's tears decelerate as they travel. Upon stopping or hitting an obstacle, they burst into 8 tears in all directions. Tears can be fired into other tears to feed them, increasing their damage. Trisagion Tears are replaced with piercing white blasts of light. Schoolbag Allows Isaac to hold two active items. Extension CordBeams of yellow electricity flow between Isaac and his familiars, damaging any enemies between them.
#5	Blanket Grants one soul heart. Upon entering a boss room, grants a shield that blocks one hit, then disappears. Sacrificial Altar Upon use, sacrifices up to 2 familiars and spawns an item from the Devil Room Pool for each familiar sacrificed. Lil Spewer Spawns a random pill, and grants a small Spewer familiar that charges up and fires different types of creep. Marbles Spawns 3 random trinkets. Taking damage has a small chance to swallow Isaac's currently held trinket, gaining its effect permanently. Mystery Egg Spawns an egg familiar, which cracks and turns into a random friendly enemy when Isaac is hurt. The egg regenerates upon entering a different room. Flat Stone Tears bounce off the floor. Tears that hit an enemy after bouncing deal splash damage to all nearby enemies for 25% of Isaac's tear damage. Marrow Grants one bone heart and spawns three red heart pickups. Slipped Rib Spawns a bone familiar that circles around Isaac and reflects enemy shots. Hallowed Ground Spawns a white poop familiar, which turns into a white poop when Isaac is hurt. Pointy Rib Spawns a bone familiar that can be aimed with the fire buttons and does contact damage. Book of the Dead Upon use, spawns a friendly Bony or an orbital bone for each enemy killed in the current room. Dad's Ring Creates a ring of light around Isaac that petrifies enemies in contact. Divorce Papers Spawns a Mysterious Paper, increases tears, and grants a bone heart. Jaw Bone Spawns a familiar that flies the room while firing, dealing a flat 7 damage to enemies that come in contact and retrieving pickups. Brittle Bones Replaces all red hearts with 6 empty bone hearts. Upon losing a bone heart, Isaac fires bones in 8 directions and permanently gains a tears up. Broken Shovel 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 One of two parts necessary to create Mom's Shovel. Mom's Shovel Spawns a trapdoor that leads to the next floor upon activation. Unlocks The Forgotten when used on a mound of dirt that appears in Dark Room. Rotten PennySpawns a blue fly every time a coin is picked up. Baby-BenderGrants Isaac's familiars homing shots. Finger BoneGrants a chance to gain a bone heart upon taking damage.