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Sharp Plug

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Item icon
Item altar
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Character appearance
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Shop Shop
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Added in  Afterbirth(page 2, column 2, row 5)
Removed in Afterbirth(page 3, column 2, row 1)

Sharp Plug is a passive item.

Effects[edit | edit source]

  • If Isaac's current activated item has no charges, attempting to activate the item fully recharges it in exchange for two hearts of Isaac's health.
    • If the item has any charges, the Sharp Plug will not work.

Notes[edit | edit source]

  • If Isaac has less than two black or soul hearts, it will remove them but will not remove any red hearts.
  • The Lost does not benefit from this item unless they have a respawn because their active item's charge will not refill if the Holy Mantle Holy MantleHoly Mantle Icon.pngAutomatically negates first taken damage in every room. effect activates. Sharp Plug only activates upon receiving actual damage.
  • Added in  Afterbirth When used by Keeper, it will only drain one coin heart.

Synergies[edit | edit source]

  • Blank Card Blank CardBlank Card Icon.png4 roomsHas the same effect as the card or rune currently held by Isaac.: Grants infinite health when combined with XIX - The Sun XIX - The SunXIX - The Sun Icon.pngRestores Isaac's full health, deals 100 damage to all enemies in the room, and reveals the map for the current floor, except the Super Secret Room.. Other cards such as V - The Hierophant V - The HierophantV - The Hierophant Icon.pngSpawns 2 soul hearts. and VI - The Lovers VI - The LoversVI - The Lovers Icon.pngSpawns 2 full red hearts. If used in a black heart or eternal heart-containing Super Secret Room, it will spawn those types of hearts instead. result in no net loss of health and can be used to trigger items that activate upon taking damage.
  • Bone hearts: A bone heart that isn't empty can absorb the damage from the sharp plug without being destroyed, allowing charging at a lower cost. An empty bone heart can also absorb the damage fully, though is destroyed in the process.
  • Pyromaniac PyromaniacPyromaniac Icon.pngIsaac heals 1 heart instead of taking damage from an explosive source. Adds 5 bombs.: Isaac can regenerate the lost health with bombs, essentially allowing 2 bombs to be converted to a full item recharge.
    • Pyromaniac + Ipecac IpecacIpecac Icon.pngReplaces tears with explosive and poisoning projectiles fired in an arc from the mouth./Dr. Fetus Dr. FetusDr. Fetus Icon.pngTears are replaced by bombs that benefit from bomb-enhancing effects and slide for a fixed time after being fired./Epic Fetus Epic FetusEpic Fetus Icon.pngIsaac's tears are replaced with guided missiles, like those used by the Doctor's Remote.: If Isaac has enough heart containers, the explosions can be used to heal him, granting infinite item recharges.
  • Added in Afterbirth †Schoolbag SchoolbagSchoolbag Icon.pngAllows Isaac to hold two active items.: Both held active items are recharged.
  • The Wafer The WaferThe Wafer Icon.pngAll sources of damage that would cause more than one half heart of damage are reduced to one half heart instead.: Reduces the health cost to half a heart.
    • The Wafer + Book of Revelations Book of RevelationsBook of Revelations Icon.png6 roomsAdds 1 soul heart, increases the chance for a Devil or Angel Room to appear, and increases the chance for the next boss to be a Horseman (except on XL floors and floors with fixed bosses such as Mom).: Grants unlimited soul hearts.
    • The Wafer + Prayer Card Prayer CardPrayer Card Icon.png6 roomsGrants an eternal heart per use.: Two uses produces a filled heart container, allowing a player to max out their heart containers at no net cost of hearts.
    • The Wafer + Satanic Bible Satanic BibleSatanic Bible Icon.png6 roomsUpon activation, Isaac gains a black heart.: Grants unlimited black hearts.
    • The Wafer + Yum Heart Yum HeartYum Heart Icon.png4 roomsRestores 1 whole red heart.: Allows for unlimited regeneration of red hearts.

Interactions[edit | edit source]

  • 9 Volt 9 Volt9 Volt Icon.pngReduces the charge of any Activated Items by 1. Any 1 charge items instead have timed recharges.: Renders the Sharp Plug unusable. Sharp Plug can only be used if the item is at 0 charge, but 9 Volt instantly gives 1 charge to the item upon activation.
  • Breath of Life Breath of LifeBreath of Life Icon.png6 secondsGrants 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.: When the charge for Breath of Life reaches zero, the Sharp Plug will immediately take effect if the player continues to hold the Use Item button, dealing 2 hearts of damage.
  • Holy Mantle Holy MantleHoly Mantle Icon.pngAutomatically negates first taken damage in every room.: Holy Mantle blocks the damage from Sharp Plug if the shield is active, but also keeps Isaac's active item from charging. Using Sharp Plug again in the same room will cause it to function normally.
  • Isaac's Heart Isaac's HeartIsaac's Heart Icon.pngIsaac himself is now immune to all damage, and a heart familiar appears and follows Isaac. If the heart is hurt, Isaac is hurt.: Renders the Sharp Plug unusable.
  • Added in  AfterbirthMega Blast Mega BlastMega Blast Afterbirth Icon.png12 roomsUpon 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.: Sharp Plug will not work with Mega Blast, yet it will charge other 12 room charge items normally.

In-game Footage[edit | edit source]

Seed[edit | edit source]

 PC  BKXE 1ZBZ (First floor shop, The Wafer and A Quarter in an urn in first floor treasure room)

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