Unholy Plate

Crafted from black iron, this crude suit of +2 resilient full plate is designed to make you look like a horned demon with your face peering out of the screaming maw of the beast.

While wearing the armor, you can attack with the helmet's horns. They're a martial melee weapon with the effects of a +2 weapon potency rune. They deal 2d8 piercing damage and have the deadly d12 and unholy traits. On a critical hit with the horns, the target must succeed at a DC 30 Fortitude or become Drained 1 (or Drained 2 on a critical failure). The horns can't be etched with any runes.

If you're holy, you're Drained 2 and can't recover from this condition while wearing unholy plate.