Jovok Armor

This +4 Leather Armor has a maximum dexterity bonus of +3. As a reaction, after you take damage you may choose to reflect that damage to all creatures and objects within 5 feet of you including yourself. This ability can be used a number of times equal to your Constitution modifier and recharges on a long rest. Demons are immune to this damage.
There are few problems that cannot be solved with an appropriate application of Jovoks --Felwood The Summoner