Durval's Beaten Drum

Instrument

Item Details

Utility 39
Bonus Level 20
Dyeable Yes
Sellable Yes
Tradeable Yes

Restrictions

Level Required Any
Usable By
All Classes

Magical Bonuses

Basic
Crush Resist 6%
Body Resist 5%
Instruments 3
ToA
Toa Power Pool 1%

Raw Item JSON

{
  "sell_value" : 37718,
  "bonus_level" : 20,
  "sources" : {
    "monsters" : {
      "normal_drop" : [ "Durval" ]
    }
  },
  "flags" : {
    "dyable" : true,
    "emblemizable" : false
  },
  "icon" : 2977,
  "utility" : 39.0,
  "delve_text" : "Realm: Albion\n \n  (This item may be dyed with a Weapon Enamel obtained from slaying Shrouded Isles or Atlantis denizens.)\nMagical Bonuses:\n- Instruments: 3 pts\n- Crush: 6%\n- Body: 5%\n- Power: 1 % of power pool.\n \n \n \nBonus Level: 20\n",
  "salvage_amount" : 18,
  "artifact" : false,
  "material" : 71,
  "name" : "Durval's Beaten Drum",
  "usable_by" : [ 0 ],
  "realm" : 1,
  "dye_type" : 0,
  "id" : 18189,
  "category" : 4,
  "bonuses" : [ {
    "id" : 98,
    "type" : 2,
    "value" : 3
  }, {
    "id" : 1,
    "type" : 5,
    "value" : 6
  }, {
    "id" : 16,
    "type" : 5,
    "value" : 5
  }, {
    "type" : 34,
    "value" : 1
  } ],
  "ability_tags" : [ ]
}
How is utility calculated?