Staff of the Underworld

Bonuses:
Level 1: +3 Magic Power
Level 2: Underworld Channel (Drains 2 mana from the enemy hero each turn.)
Level 3: Underworld Curse (The target enemy creature and adjacent creatures take 260 damage (Pure Magic) each turn. These wounds cannot be healed. Duration: 3 turns. Charges: 1.)
Level 4: Binding Seal (-10 to the initiative of all enemy creatures.)
Level 5: Improved "Underworld Curse" ("Underworld Curse" lasts 5 turns and at the beginning of each turn can spread from the affected creatures to adjacent ones.)
It's the only weapon where the pommel sparkles when you give it to a hero.
It's given in the 1st mission of the "Dance of Death" DLC campaign - The Fall of the House of the Bull
And yes...
I'VE COLLECTED THE ENTIRE COLLECTION OF DYNASTY WEAPONS - 27 pieces!!!
An article has appeared describing how to obtain the Sar-Agret Staff and the Dragon's Flame Tongue.
Because some people say that the Sar-Agret Staff is only available in the USA (accounts purchased in the USA), and we don't have access to it.
So, there's nothing illegal about it; it's just restoring fairness.)
It's all again tied to that exploit in the Inferno campaign.