Protection of Mother Kosem (5e Equipment)

Armor (any), legendary (requires attunement by a warlock)

This sea-soaked suit of armor smells of brine and is covered in archaic, otherworldly, eldritch runes. While you are wearing this armor, you gain a +2 bonus to your AC, you have advantage on saving throws against being charmed or frightened.
Additionally, this armor has 3 charges, which it regains nightly at dusk. You can expend a charge to cast the eldritch blast cantrip as a bonus action.