[
  {
    "id": "succumbvampire",
    "type": "item_group",
    "subtype": "collection",
    "entries": [
      { "group": "bloodset", "damage": [ 1, 3 ] },
      { "group": "underwear", "damage": [ 1, 3 ] },
      { "item": "corruptbloodrune", "prob": 100 }
    ]
  },
  {
    "type": "item_group",
    "id": "leech",
    "subtype": "collection",
    "entries": [ { "item": "smallleechteeth", "prob": 20 } ]
  },
  {
    "type": "item_group",
    "id": "devourerleech",
    "subtype": "collection",
    "entries": [ { "item": "bloodsac", "prob": 100 } ]
  },
  {
    "id": "elderzombie",
    "type": "item_group",
    "subtype": "collection",
    "entries": [ { "group": "clothing_outdoor_set", "damage": [ 1, 2 ] }, { "group": "underwear", "damage": [ 1, 2 ] } ]
  }
]