Demon Armour

Armour (plate) (requires attunement)

Rarity: Very rare

While wearing this armour, you gain a +1 bonus to AC, and you can understand and speak Abyssal. In addition, the armour’s clawed gauntlets turn unarmed strikes with your hands into magic weapons that deal slashing damage, with a +1 bonus to attack rolls and damage rolls and a damage die of 1d8.

Curse – Once you don this cursed armour, you can’t doff it unless you are targeted by the remove curse spell or similar magic. While wearing the armour, you have disadvantage on attack rolls against demons and on saving throws against their spells and special abilities.

Source: Player’s Handbook