Arcing Half Plate of Storms

Arcs of harmless bolts of electricity emanate from and cross this armor while it is worn.

Your AC increases by +1 while wearing this armor and you are resistant to lightning damage.

Whenever you cast a spell that deals lightning damage, you can cause lightning  to wreathe you until the end of your next turn. The lightning doesn't harm you or your possessions. While the lightning is present, any creature within 5 feet of you that hits you with a melee attack takes 1d6 lightning damage.

This magic item has five charges, for each charge you expend the damage increases by 1d6 for a maximum total of 6d6. These charges reset daily at dawn.

Half plate consists of shaped metal plates that cover most of the wearer's body. It does not include leg protection beyond simple greaves that are attached with leather straps.

Notes: Bonus: Armor Class, Resistance: Lightning, Stealth Disadvantage