Hero of Killaloe's Harp

Instrument

Item Details

Utility 21.67
Bonus Level 12
Dyeable Yes
Sellable No
Tradeable Yes

Restrictions

Level Required 15
Usable By
All Classes

Magical Bonuses

Basic
Acuity 10
All Casting 3

Primary Ability

Replenish Power Level 15
Charge


Raw Item JSON

{
  "requirements" : {
    "level_required" : 15
  },
  "bonus_level" : 12,
  "sources" : {
    "stores" : [ "ALB Killaloe BP Store1" ]
  },
  "flags" : {
    "dyable" : true,
    "emblemizable" : false,
    "no_sell" : true
  },
  "icon" : 3688,
  "utility" : 21.666666666666664,
  "delve_text" : "Realm: Albion\n \nMagical Bonuses:\n- ALL magic skills: 3 pts\n- Acuity: 10 pts\n \nLevel Requirement: 15 Level\n \n \nMagical Ability:\nFunction: replenish power\n \nReplenishes the target's power pool.\n \nAmount: 25%\nTarget: Self\nCasting time: instant\n \n- This spell is cast when the item is used.\n \nCan use item every: 10:00 min\n \nCannot be sold to merchants.\n \nBonus Level: 12\n",
  "abilities" : [ {
    "spell" : 599,
    "magic_type" : 6,
    "power_level" : 15,
    "position" : 1
  } ],
  "salvage_amount" : 24,
  "artifact" : false,
  "material" : 35,
  "name" : "Hero of Killaloe's Harp",
  "usable_by" : [ 0 ],
  "realm" : 1,
  "dye_type" : 0,
  "id" : 60391,
  "category" : 4,
  "use_duration" : 600,
  "bonuses" : [ {
    "id" : 303,
    "type" : 2,
    "value" : 3
  }, {
    "id" : 10,
    "type" : 1,
    "value" : 10
  } ],
  "ability_tags" : [ "fn_power_heal" ]
}
How is utility calculated?