Void Heart

{
  "slug": "void-heart",
  "name": "Void Heart",
  "game": "hk",
  "notchCost": 0,
  "inventoryOrder": 41,
  "upgradeOf": "kingsoul",
  "fragile": false,
  "effect": "Unifies the Knight with the void. Cannot be unequipped; enables alternate endings.",
  "description": "Replaces the Kingsoul after taking it into the Birthplace at the bottom of the Abyss. Pacifies all Siblings and unlocks the Dream No More ending and the Pantheon of Hallownest.",
  "location": "Birthplace at the bottom of the Abyss, equipped automatically upon entry while wearing the Kingsoul.",
  "area": {
    "slug": "birthplace",
    "name": "Birthplace"
  },
  "acquisition": "story",
  "synergies": [],
  "summary": "Forever-equipped soul charm that costs 0 notches. Required for the true ending.",
  "verified": false,
  "sources": [
    "https://hollowknight.fandom.com/wiki/Void_Heart"
  ],
  "wikiSlug": "Void_Heart",
  "wikiUrl": "https://hollowknight.fandom.com/wiki/Void_Heart"
}