Unique Boots

Bones of Ullr

Bones of Ullr improves the Reservation Efficiency of skills that create Undead Minions. It allows those minion skills to consume less reserved resource while adding Life, Mana, Energy Shield, and Movement Speed.

0.5.4d

Current data

Catalog version 0.5.4d

No direct 0.5 patch change is linked to this page. The displayed values are current for catalog version 0.5.4d.

Item effects

5 lines

01(5-15)% increased Movement Speed

02(40-60)% increased Energy Shield

03+(20-40) to maximum Life

04+(20-40) to maximum Mana

05(20-30)% increased Reservation Efficiency of Skills which create Undead Minions

Vaal Cultivation Orb

Other Unique rule

Bones of Ullr is not listed among the 48 corrupted Vaal Uniques with an item-specific Cultivation modifier pool. Using a Vaal Cultivation Orb follows the separate rule for other Uniques: it replaces the item with a random Corrupted Unique of the same Item Class.

Target class: Boots
Result: Random Corrupted Unique of the same Item Class
Exact pool: Not published as an exhaustive list

The exact random pool depends on item class and current eligibility rules, so it is not represented as a fixed item-to-item outcome.

Compare the Vaal Unique modifier pools and the other Unique rule

How to get Bones of Ullr

World drop

Bones of Ullr can drop anywhere. It can be chanced.

Drop: Enabled
Restriction: None
Orb of Chance: Eligible

Runeforging input

This item is consumed by 1 exact Runeforging recipe.

Vaal Orb outcomes

4 outcomes / 10 enchantments

Vaal Orb can corrupt Bones of Ullr. One applicable outcome is selected, and the item normally cannot be modified again by ordinary crafting.

No change.

Applies a modifier magnitude multiplier of 0.78x to 1.22x (in 0.01 increments) before rounding to explicit modifiers. Applies before quality effects.

The resulting values are rounded to the nearest whole number, rather than always being rounded down like most decimal values in the game. However, testing suggests the game may use truncation with a +0.5 shift instead of standard rounding. This appears to bias internally negative stats (like 10% Reduced Dexterity) toward zero, preventing some expected values from appearing while making others more common. A formula of trunc(value + 0.5) may explain this behavior.

Adds a special Vaal enchantment to the item.

Adds an item socket to weapons (including sceptres) and armour, ignoring socket limits.

For jewellery, no change. (This outcome is not removed by Omen of Corruption.)
The item cannot have more sockets than the amount of space the item takes up.
If the item is socketed with Cadigan's Epiphany, the item cannot gain an augment socket via corruption.

Possible corruption enchantments10

(15-25)% increased Energy ShieldLocal / Level 1

(10-20)% reduced Attribute RequirementsLocal / Level 1

+(20: 25)% to Fire ResistanceGlobal / Level 1

+(20: 25)% to Cold ResistanceGlobal / Level 1

+(20: 25)% to Lightning ResistanceGlobal / Level 1

+(1: 3)% to Maximum Lightning ResistanceGlobal / Level 1

(3-5)% increased Movement SpeedLocal / Level 1

(20-30)% reduced Slowing Potency of Debuffs on YouGlobal / Level 1

(20-30)% increased Stun ThresholdGlobal / Level 1

(20-30)% increased Freeze ThresholdGlobal / Level 1

View every corruption outcome and enchantment

How it works

1 interactions

Reservation efficiency

(20-30)% increased Reservation Efficiency of Skills which create Undead Minions.

Related mechanics

MechanicReservation

Reservation commits part of a resource to an active effect. Most persistent Skills reserve Spirit, but some effects reserve Life or Mana. The reserved amount remains part of the resource's maximum and cannot be spent, recovered, or used as defence while it is reserved.

MechanicEfficiency

Efficiency reduces a cost or reservation by dividing its base amount. Increased Efficiency has diminishing returns: 50% increased Efficiency divides by 1.5, while 100% increased Efficiency divides by 2. It is not the same calculation as reduced cost or less reservation.

Patch history

2 changes

0.1.1

Direct change

The Bones of Ullr Unique Boots now provide +20-40 to Maximum Life and maximum Mana (both previously +25). Existing versions of this item can be updated using a Divine Orb.

0.3.0

Direct change

The Bones of Ullr Unique Boots now provide 20-30% increased Reservation Efficiency of Skills which create Undead Minions, instead of Undead Minions have 20% reduced Reservation. Existing items will have reduced Reservation Efficiency but can be updated with a Divine Orb. It also now has 5-15% increased Movement Speed.

Item viewModernIn-game