Deathblock

On named items, this enhancements is available in other slots as well:
 * Cloak of Night (Level 12) and its upgrades
 * Death's Locket (neck slot)
 * Eye of the Beholder ring
 * Sacred Helm
 * Shining Crest of St. Markus (head slot)
 * Silver Flame Pendant (neck slot) and its upgrade