Ice Forged Cloak of Concentration

Jewelry Cloak

Item Details

Utility 15
Bonus Level 12
Dyeable Yes
Sellable Yes
Tradeable Yes

Restrictions

Level Required Any
Usable By
All Classes

Magical Bonuses

Basic
Hit Points 20
Acuity 15
Catacombs
Concentration 4

Raw Item JSON

{
  "sell_value" : 6809,
  "sources" : {
    "monsters" : {
      "normal_drop" : [ "Forgemaster Wolak" ]
    }
  },
  "bonus_level" : 12,
  "flags" : {
    "dyable" : true,
    "emblemizable" : true
  },
  "icon" : 558,
  "utility" : 15.0,
  "delve_text" : " \nMagical Bonuses:\n- Concentration: 4%\n- Requirement: Cannot be used in the Frontiers\n- Acuity: 15 pts\n- Hits: 20 pts\n \n \n \nBonus Level: 12\n",
  "slot" : 6,
  "artifact" : false,
  "material" : 0,
  "name" : "Ice Forged Cloak of Concentration",
  "usable_by" : [ 0 ],
  "realm" : 0,
  "dye_type" : 0,
  "id" : 53341,
  "category" : 5,
  "bonuses" : [ {
    "type" : 38,
    "value" : 4,
    "requirement_id" : 6207
  }, {
    "id" : 10,
    "type" : 1,
    "value" : 15
  }, {
    "type" : 4,
    "value" : 20
  } ],
  "ability_tags" : [ ]
}
How is utility calculated?