From The Heroes of Might and Magic III wiki

Artifacts equipped in this slot have varying powers, including a couple of the best in the game. The artifacts equipped in this slot are:

• Dragon Wing Tabard
• Vampire's Cowl
• Surcoat of Counterpoise
• Ambassador's Sash
• Cape of Conjuring
• Recanter's Cloak
• Cape of Velocity
• Everflowing Crystal Cloak
• Angel Wings
• Cloak of the Undead King