Demon Armor
Armor (Any Light, Medium, or Heavy), Very Rare (Requires Attunement)
Cost: 40,000 gp
Base Items: Breastplate, Chain Mail, Chain Shirt, Half Plate Armor, Hide Armor, Leather Armor, Padded Armor, Plate Armor, Ring Mail, Scale Mail, Spiked Armor, Splint Armor, Studded Leather Armor, Pavise, Shield
While wearing this armor, you gain a +1 bonus to Armor Class, and you know Abyssal. In addition, the armor's clawed gauntlets allow your Unarmed Strikes to deal 1d8 Slashing damage instead of the usual Bludgeoning damage, and you gain a +1 bonus to the attack and damage rolls of your Unarmed Strikes.
Curse
Once you don this cursed armor, you can't doff it unless you are targeted by a Remove Curse spell or similar magic. While wearing the armor, you have Disadvantage on attack rolls against demons and on saving throws against their spells and special abilities.