Flametouched of Avernus

Pre-requisite - Martial Classes, Level 4

As a bonus action, you can release the flames of war as a physical aura that causes 1d4 fire damage to all creatures who make physical contact (melee attacks)(including allies trying to heal with a touch spell).  That damage ignores any resistance, including Barbarian Rage.  Any immunity becomes resistance.  The ability comes with a consequence.  At the end of every turn, make a DC 11 CON or you take 1 point of damage (MIN 1) until you dismiss it, at will.

The ability can last a number of rounds equal to your CON score.  A Barbarian Rage triggers it automatically.