Boots of the Windcaller

Unique effect
+50% Movement Speed for 4 seconds after a kill.

Item

Slot

Boots

Rarity

Legendary

Classes

All classes

Minimum drop level

25

Required level

Item level / 10

Upgradable

Yes, up to +10

Sockets

None

Can be Ancient

Yes, 10%

Can be Black Mist

Yes, 0.2%

Tradable

Unrevealed Black Mist only

The required level is the item level divided by 10, from 1 to 70. Ancient: 10% of its drops from level 70 enemies and chests and of Mystery items bought at player level 70 (9.98% where Black Mist comes first); twice the upgrade gold and sell price. Black Mist: 0.2% of those drops on Nightmare and Inferno and of those Mystery items once Nightmare is unlocked; requires level 70, never Ancient, tradable until its first reveal.

Legendary drops
Drops from enemies of level 25 and higher and from treasure chests they drop, only for heroes of its classes.
Mystery Boots
Sold for Soul Shards by Lady "Shadow", the Mystery Vendor in each town: one Boots of random rarity for the current hero. Online characters can buy it too, at the price the game server sets.

Drop chances are the game's rules for offline characters; the game server decides the loot of online characters.

Before upgrades, by item level. An enemy of level E drops item level 10 x (E - 1) to 10 x E + 9 on Normal, 700 and higher on Nightmare and Inferno. Each number rolls on its own from 0.85 to 1.15 x its base. Armor = 1.6 x 0.5 x item level x the roll. An Ancient drop takes the top of every range.

Item level	Armor
250	170-230
300	204-276
500	340-460
700	476-644
850	578-782

Attribute = 1.6 x item level x its value per item level x the roll. Ranges at item level 700 and 850:

Attribute	Item level 700	Item level 850
Strength, Dexterity, Intelligence	48-64	58-78
Max Health	428-580	520-704
Magic Resist	476-644	578-782
Dodge Chance	4.8-6.4%	5.8-7.8%
Mana Cost Reduction, Cold Damage Reduction, Fire Damage Reduction, Bonus Move Speed	9.5-12.9%	11.6-15.6%
Critical Damage Reduction, Health Potion Find, Item Find, Gold Find	19.0-25.8%	23.1-31.3%
Life on Hit	19-26	23-31

A Black Mist Boots of the Windcaller has item level 850, 782 Armor and no rolled attributes: it gets 5 revealed ones instead.

Upgrades

Each upgrade level adds

2 steps of +5%

The steps go in turn to the Armor and then to each attribute in tooltip order.

Cost of each upgrade
3 x (current upgrade level + 1)² x item level gold, x 2 for an Ancient item, and 3 Iron Ore, 2 Gold Ore and 1 Earth Essence x (current upgrade level + 1)². The success chance falls as the upgrade level rises.