as a bonus action, a gilded devil can turn rings, necklaces, and other jewelry momentarily against their wearer. The devil can affect any visible item of jewelry on up to two creatures within 60 feet, twisting them into cruel barbs and spikes. Each target must succeed on a DC 15 Wisdom saving throw to halve the damage from this effect. If the saving throw fails, the victim takes 13 (3d8) piercing damage and an additional effect based on the item location targeted.

an item is treated as jewelry if it is made of a precious material (such as silver, gold, ivory, or adamantine), adorned with gems, or both, and is worth at least 100 gp.

arms: STR Save or Melee Damage halved until a short rest

hand: STR Save or Drop any held item

eyes: DEX Save or Permanently blinded

head: DEX Save Disadvantage on INT checks until long rest

feet: DEX Save or Speed halved for 24 hours

neck: CON Save or Stunned, unable to breathe for 1 round

other: No additional effects

A gilded devil’s attacks ignore any protection provided by nonmagical armor made of bronze, iron, steel, or similar metals. Protection provided by valuable metals such as adamantine, mithral, and gold apply, as do bonuses provided by non-metallic objects.

As a bonus action, a gilded devil wearing jewelry worth at least 1,000 gp can reshape it into a +2 heavy flail. A creature struck by this jeweled flail suffers disadvantage on all Wisdom saving throws until his or her next short rest, in addition to normal weapon damage. The flail reverts to its base components 1 minute after it leaves the devil’s grasp, or upon the gilded devil’s death.

As an action, a gilded devil can consume nonmagical jewelry or coinage worth up to 1,000 gp. For each 200 gp consumed, it heals 5 hp of damage. A gilded devil can use this ability against the worn items of a grappled foe. The target must succeed on a DC 13 Dexterity saving throw to keep an item from being consumed.