Path of the Cursed

Your rage comes from a curse bestowed on you at birth, you have learnt to focus the curse to fuel your rage causing it to effect you less.

Fueled by Curses

Starting when you choose this path at 3rd level, you have learnt to channel effects of curses and spells to fuel your rage. When you enter a rage you can suspend one spell effect for a number of minutes equal to your barbarian level + your Constitution modifier. The spell must be of a level equal to or less than half your barbarian level (rounded up). If you suspend a spell effect you gain a bonus to your damage rolls equal to a third of the spells level (rounded up). This bonus lasts while the spell effect isn't taking effect and you are raging.

Cursed Blood

Starting at 3rd level, you are under the effects of the bane spell (this classes as a spell but cannot be dispelled) at all times. You can suspend this effect with the Fueled by Curses feature.

Curse Transference

At 6th level, you can channel your curse into your weapons and have gained a strong resistance to curses. When you hit a creature while raging you can curse the creature, it must succeed on a Wisdom saving throw (DC 8 + your proficiency bonus +  your Constitution modifier) or suffer one of the effects of the bestow curse spell for one minute. You can use this feature a number of times equal to your constitution modifier and a creature can only have one effect on them at a time, if you put a new effect on a creature they lose the old effect. 

Maledict Resistance

Starting at 10th level, while you are raging you have advantage on Wisdom saving throws and have resistance to necrotic damage. You can now suspend two spell effects with your Fueled by Curses feature (the higher spell effects your damage rolls).

Hunter of Curse Bringers

Beginning at 14th level, you become a terrifying threat to mages and cause them to turn they spells onto you. When a creature casts a spell that causes a single creature to make a saving throw while you are the closest creature to the caster (you win ties if there are multiple creatures equally close), you can use your reaction to make the spell target you. Also, your Fueled by Curses feature's damage is also applied to your attack rolls.