Green hood lined with silver stitching

Identify

Object 'a green hood lined with silver stitching'...
It is a level 34 armor, weight 4.
Locations it can be worn:  head
Special properties:  magic
Genres allowed:  sorcerer divinity aberrant shaman
This armor has a gold value of 500000.
Armor class is 3 of 3.
Affects hp by 20.
Affects mana by 50.
Affects hit roll by 3.
Affects damage roll by 3.
Affects wisdom by 2 if class is augurer.
Affects intelligence by 2 if class is mage.
Affects charisma by 2 if class is cleric.
Affects intelligence by 2 if class is nephandi.
Affects constitution by 1 if class is druid.
Affects dexterity by 1 if class is druid.

Information

• Mob: Unknown
• Area: The Wilds
• Pop: No
• Manufactured: Unknown
• Out of Game: No
• Minimum Level: Unknown
• Maximum Level: Unknown
• Known keywords: Unknown

Notes

I had this item poof on a lvl 40 gnome Aug when I took it off to repair it.
You stop using a green hood lined with silver stitching.
As you remove the hood the fabric unweaves, disappearing into the ether.
Not sure what the trigger is. Random chance? level restrict?