Unyielding Cuirass

Unique effect
Taking damage while below 30% Health makes you Invulnerable for 4 seconds. (25s cooldown)

Item

Slot

Chest Armor

Rarity

Legendary

Classes

All classes

Minimum drop level

35

Required level

Item level / 10

Upgradable

Yes, up to +10

Sockets

Up to 2, Armor bonus, from required level 30

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 level 70 treasure chests (9.98% on Nightmare and Inferno, where the Black Mist roll comes first). An Ancient item costs twice the gold to upgrade and sells for twice the gold. Black Mist: 0.2% of its drops from level 70 enemies and level 70 treasure chests on Nightmare and Inferno. A Black Mist item requires level 70, is never Ancient and stays tradable until its mists are revealed.

Lord of the Crimson Vale
0.5% per cleared encounter with it, on all difficulties. Met in The Crimson Vale stage 7 (level 52 on Normal).

Legendary drops
Drops from enemies of level 35 and higher and from treasure chests they drop, only for heroes of its classes.
Mystery Chest Armor
Sold for Soul Shards by Lady "Shadow", the Mystery Vendor in each town: one Chest Armor of random rarity for the current hero. Online characters can buy it too, at the price the game server sets.

Enemy special drops are rolled once for every cleared encounter the enemy is part of, however many of it the encounter holds, in the places listed here. On Nightmare and Inferno every enemy in them is level 70.

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