Drum of Tribal Rhythm

Instrument

Item Details

Utility 61.67
Bonus Level 35
Dyeable No
Sellable Yes
Tradeable Yes

Restrictions

Level Required 50
Usable By
All Classes

Magical Bonuses

Basic
Charisma 10
Regrowth 4
Music 5
ToA
Toa Power Pool 5%

Primary Ability

Health Regen Level 50
Charge (30 max)


Raw Item JSON

{
  "sell_value" : 40056,
  "requirements" : {
    "level_required" : 50
  },
  "bonus_level" : 35,
  "sources" : {
    "monsters" : {
      "normal_drop" : [ "Gelvin the Mad" ]
    }
  },
  "flags" : {
    "dyable" : false,
    "emblemizable" : false
  },
  "icon" : 2980,
  "utility" : 61.666666666666664,
  "delve_text" : "Realm: Hibernia\n \nMagical Bonuses:\n- Music: 5 pts\n- Regrowth: 4 pts\n- Power: 5 % of power pool.\n- Charisma: 10 pts\n \nLevel Requirement: 50 Level\n \n \nCharged Magic Ability:\n- 30 Charges\n- 30 Max\nFunction: health regen\n \nTarget regenerates health during the duration of the spell.\n \nValue: 52\nTarget: Self\nDuration: 20 sec\nCasting time: instant\n \n- This spell is cast when the item is used.\n \n \nBonus Level: 35\n",
  "abilities" : [ {
    "max_charges" : 30,
    "spell" : 3786,
    "magic_type" : 6,
    "power_level" : 50,
    "position" : 1
  } ],
  "salvage_amount" : 5,
  "artifact" : false,
  "material" : 71,
  "name" : "Drum of Tribal Rhythm",
  "usable_by" : [ 0 ],
  "realm" : 3,
  "id" : 49140,
  "category" : 4,
  "bonuses" : [ {
    "id" : 109,
    "type" : 2,
    "value" : 5
  }, {
    "id" : 106,
    "type" : 2,
    "value" : 4
  }, {
    "type" : 34,
    "value" : 5
  }, {
    "id" : 7,
    "type" : 1,
    "value" : 10
  } ],
  "ability_tags" : [ "fn_enhancement_health_regen" ]
}
How is utility calculated?