Drum of the Hollow Heart

Instrument

Item Details

Utility 63
Bonus Level 33
Dyeable No
Sellable Yes
Tradeable Yes

Restrictions

Level Required 39
Usable By
All Classes

Magical Bonuses

Basic
Acuity 27
All Casting 5
ToA
Toa Magic Damage 2%
ToA Overcap - Acuity 5

Primary Ability

Power Regen Level 39
Charge (10 max)


Raw Item JSON

{
  "sell_value" : 140000,
  "requirements" : {
    "level_required" : 39
  },
  "bonus_level" : 33,
  "sources" : {
    "monsters" : {
      "normal_drop" : [ "Frit", "Frat", "Underviewer Treeal", "Duga", "Allyn", "Scratch", "Lobigan", "Atur", "Guardian of the Silver Hand", "Overseer of the Silver Hand", "Viewer Etol", "Overman Regnal", "Overman Hurath" ]
    }
  },
  "flags" : {
    "dyable" : false,
    "emblemizable" : false
  },
  "icon" : 2980,
  "utility" : 63.0,
  "delve_text" : "Realm: Hibernia\n \nMagical Bonuses:\n- Acuity: 27 pts\n- ALL magic skills: 5 pts\n \nLevel Requirement: 39 Level\n \nBonus to magic damage: 2%\nBonus to acuity attribute bonus cap: 5\n \nCharged Magic Ability:\n- 10 Charges\n- 10 Max\nFunction: power regen\n \nTarget regenerates power during the duration of the spell.\n \nValue: 2\nTarget: Self\nDuration: 10:00 min\nCasting time:      3.0 sec\n \n- This spell is cast when the item is used.\n \nCan use item every: 1:00 min\n \n \nBonus Level: 33\n",
  "abilities" : [ {
    "max_charges" : 10,
    "spell" : 3819,
    "magic_type" : 6,
    "power_level" : 39,
    "position" : 1
  } ],
  "salvage_amount" : 22,
  "artifact" : false,
  "material" : 71,
  "name" : "Drum of the Hollow Heart",
  "usable_by" : [ 0 ],
  "realm" : 3,
  "id" : 41667,
  "category" : 4,
  "use_duration" : 60,
  "bonuses" : [ {
    "id" : 10,
    "type" : 1,
    "value" : 27
  }, {
    "id" : 303,
    "type" : 2,
    "value" : 5
  }, {
    "type" : 9,
    "value" : 2,
    "requirement_id" : 5542
  }, {
    "id" : 10,
    "type" : 28,
    "value" : 5
  } ],
  "ability_tags" : [ "fn_enhancement_power_regen" ]
}
How is utility calculated?