Shield of the Undevout is a very rare 
Shields that applies 
Disadvantage on Template:Saving Throws to your foes and grants an additional level 1 spell slot.
Where once this shield would protect the rallying forces of good - now it pushes them back, crushing them against their allies until they pop.
Properties
+2t
Armour Class
Required Proficiency: 
Rarity: 
Weight: 2.7 kg / 5.4 lb
Price: 570 gp
Special
The wearer of this item gains:
- Dreadful Hewer: Your foes have Disadvantage on Saving Throws to resist your spells or actions that inflict Fear.
- Additional Spell Slot: You gain 1 level 1 spell slots.
- Shield Bash: When a foe hits you with a melee attack, you can use your reaction, to knock it Prone unless they succeed a Dexterity Saving Throw.
Where to find
Looted from That Which Guards