Sharp Plug

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Item icon
Item altar

 
 
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Character appearance
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Added in Afterbirth (page 2, column 2, line 5)
Removed in Afterbirth (page 3, column 2, line 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 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 Card
    Blank 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. Other cards such as V - The Hierophant and VI - The Lovers 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.
  • Cancer Cancer
    Cancer Icon.pngAdds 3 soul hearts. Grants The Wafer effect for the current room upon taking damage.
    : Repeated uses within the same room cost only half a heart.
  • The Gamekid The Gamekid
    The Gamekid Icon.png6 roomsUpon 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.
    : If Isaac has red heart containers, killing four enemies negates the health cost, and killing more results in a net gain of health.
  • Pyromaniac Pyromaniac
    Pyromaniac 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 Pyromaniac
      Pyromaniac Icon.pngIsaac heals 1 heart instead of taking damage from an explosive source. Adds 5 bombs.
      + Ipecac Ipecac
      Ipecac Icon.pngReplaces tears with explosive and poisoning projectiles fired in an arc from the mouth.
      /Dr. Fetus Dr. Fetus
      Dr. Fetus Icon.pngTears are replaced by bombs that benefit from bomb-enhancing effects and slide a fixed range after being fired.
      /Epic Fetus Epic Fetus
      Epic 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.
  • Scapular Scapular
    Scapular Icon.pngOnce 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.
    : At half a heart, Isaac will gain a soul heart. As long as Isaac has a red heart container, the soul heart will absorb Sharp Plug's damage, causing the Scapular to trigger again as long as it has not already triggered in the current room.
  • The Wafer The Wafer
    The 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 The Wafer
      The Wafer Icon.pngAll sources of damage that would cause more than one half heart of damage are reduced to one half heart instead.
      + Book of Revelations Book of Revelations
      Book 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 The Wafer
      The Wafer Icon.pngAll sources of damage that would cause more than one half heart of damage are reduced to one half heart instead.
      + The Gamekid The Gamekid
      The Gamekid Icon.png6 roomsUpon 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.
      : If Isaac has red heart containers, only one enemy needs to be killed to negate the health cost.
    • The Wafer The Wafer
      The Wafer Icon.pngAll sources of damage that would cause more than one half heart of damage are reduced to one half heart instead.
      + The Nail The Nail
      The Nail Icon.png6 roomsAdds 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.
      : Grants unlimited soul hearts.
    • The Wafer The Wafer
      The Wafer Icon.pngAll sources of damage that would cause more than one half heart of damage are reduced to one half heart instead.
      + Prayer Card Prayer Card
      Prayer 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 The Wafer
      The Wafer Icon.pngAll sources of damage that would cause more than one half heart of damage are reduced to one half heart instead.
      + Satanic Bible Satanic Bible
      Satanic Bible Icon.png6 roomsUpon activation, Isaac gains a black heart.
      : Grants unlimited black hearts.
    • The Wafer The Wafer
      The Wafer Icon.pngAll sources of damage that would cause more than one half heart of damage are reduced to one half heart instead.
      + Yum Heart Yum Heart
      Yum Heart Icon.png4 roomsRestores 1 whole red heart.
      : Allows for unlimited regeneration of red hearts.

Interactions[edit | edit source]

  • 9 Volt 9 Volt
    9 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 Life
    Breath 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 Mantle
    Holy 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 Heart
    Isaac'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 Afterbirth Mega Blast Mega Blast
    Mega Blast 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.

Ingame 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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