Anguish

Anguish is a shield made from the scales of an ancient creature, it's like has never before been seen in this land since. Comprised of two overlapping scales of massive size and green in color, it can only be theorized what the bearer of these scales looked like and how massive it would have been.

While attuned to this shield you have a +4 bonus to AC but imposes disadvantage on Dexterity (Stealth) checks. This bonus is in addition to the shield's normal bonus to AC. Your constitution stat increases by 4 to a maximum of 24.

Dragon's Hunger. The shield glitters with a sickly green light that causes the bearer to desire more and more. 

Magic Reflection. This shield has 4 charges and you can expend 1 charge to roll 1d8 as a reaction to a ranged spell that targets you, on a 7 or 8 the spell is reflected back at the caster and the effect is applied as if you were still the target. On a 1 the effect is not reflected and any damage you take is doubled. The spell Magic Missile will always be reflected back at the caster. Anguish regains 1d4 charges daily at dawn.  

Despise Magic. Even if the wielder has proficiency with shields, they can't cast spells because of the dark power which this shield resonates with. 

Dragon's Breath (2/LR). Twice per long rest you may breathe draconic fire in a 20 foot cone in front. Targets within must make a DC 17 Dexterity saving throw or take 7d6 fire damage and 7d6 dragon damage and gain 1 level of Exhaustion. Targets only take half as much on success.

Cursed Anguish (2/LR). Any creature you chose within a 20 foot radius of you must succeed a DC 17 Wisdom saving throw or gain the Frightened condition. 

Desperate Measures. Once per day, the attuned wielder can expend 4 charges to cast Antimagic Field centered on the shield or permanently reduce their constitution by 4 which can only be regained by a Wish once.

Curse. This shield is cursed, a fact that is revealed only when an identify spell is cast on the shield. You are forcefully attuned to the shield if you equip it. Attuning to the shield curses you until you are affected by the Greater Restoration spell or similar magic; removing the shield fails to end the curse.

This artifact was created by the smith known as Cavan.

Shields require the Utilize action to Don or Doff. You gain the Armor Class benefit of a Shield only if you have training with it.

Notes: Bonus: Armor Class, Stealth Disadvantage: Impose, Bonus: Constitution Score, Bonus: Ability Score Maximum, creature with a desire., Combat, Warding