{
  "type": "bloodmagic:arc",
  "input": {
    "tag": "forge:gems/diamond"
  },
  "tool": {
    "tag": "forge:bones"
  },
  "addedoutput": [
    {
      "chance": 0.5,
      "type": {
        "item": "minecraft:diamond"
      }
    }
  ],
  "output": {
    "item": "bloodmagic:altar"
  }
}