Duergar Berzerker Armor

Level 8+
Made by the craftiest, deepest dwarves, this armor was often given as a gift to their "friends", with the promise that wearing it would make them invincible in battle. The armor grants the wearer great strength and speed, but to do so it makes them insensible to pain. As a result, those who wear it often receive mortal wounds without knowing it and die of them.

Lvl 8 +1 3,400 gp
Lvl 13 +2 17,000 gp
Lvl 18 +3 85,000 gp
Lvl 23 +4 425,000 gp
Lvl 28 +5 2,125,000 gp

Armor: hide, chain, scale, plate
Enhancement: AC, Dexterity & Strength

Property: The player does not keep track of their own hit points while wearing the armor, instead the DM does. In addition, whenever the player wishes to use a healing surge, they must make a saving throw. Success indicates that they can, failure indicates that they instead attack the nearest enemy (via charge etc.)

Cursed: Removing the armor from a living creature requires a Remove Affliction ritual with a penalty to the Heal check equal to the armor’s level.