Viconia's Walking Fortress is a legendary shield that can deal 
Force damage when hit. Gives 
Advantage on saving throws against spells and 
Disadvantage to spell attacks made against the wearer.
'Walking Fortress' is a defensive technique reliant on a shield of this caliber. It involves upsetting your opponent who just wants to land a single blow.
Properties
+3
Armour Class
Required Proficiency: 
Rarity: Legendary
Weight: 2.7 kg / 5.4 lb
Price: 760 gp
Special
The wearer of this item gains:
Rebuke of the Mighty: When a foe hits you with a melee attack, you can use your 
Reaction to deal them 2~8Force damage and knock them 
unless they succeed a Dexterity 
Saving throw.- Spellguard: You gain Advantage on Saving throws against spells. Spell
Attack rolls against you have Disadvantage. - Can cast
once per Short Rest. - Can cast
once per Long Rest.
Where to find
- Looted from Viconia DeVir during the quest Daughter of Darkness in Act Three.