Duality

You have two divine forces vying for power over your soul, after certain choices you make or feats you accomplish add or subtract a Karmic Point. At certain thresholds you gain access to new abilities, however if you go over a Fiendish threshold or under a Paragon threshold you lose access to that ability. Your Karmic Points are also affected by pleasing either of your patrons, here are some examples of gaining or losing points.

Paragon Virtue: You gain 1 Karma Point for healing an incapacitated ally or sparing an enemy. You gain 2 Karma Points for burning an offering of monster parts for your holy patron. You gain 3 Karma Points for removing a curse or gaining the trust of an ally. You gain 5 Karma Points for burning an offering of magical items for your holy patron. You gain 10 Karma Points for slaying a powerful Evil aligned Creature.

Fiendish Sin: You lose 1 Karma Point for deceiving an ally or stealing from them. You lose 2 Karma Points by burning an offering of monster parts for your unholy patron. You lose 3 Karma Points by betraying an ally or slaying a good aligned creature. You lose 5 Karma Points for burning an offering of magical items for your unholy patron. You lose 10 Karma Points for slaying a powerful good aligned creature or an ally with trust in you.

Paragon Soul: When reaching 10 Karma Points healing a downed creature will give it temporary hit points equal to your characters level. When reaching 25 Karma Points as an action you can regain a single use of an ability that is restored on short rest (excluding action surge) once per long rest. When reaching 40 Karma Points gain the ability to sprout feathered wings and gain a flying speed of 50 feet for 10 min once per long rest. When reaching 60 Karma points once per dawn, as a bonus action you can give a divine blessing to a creature you can see within 60 feet giving them advantage on death saves, ability checks, and remove any negative condition currently affecting them for 1 hour.

Fiendish Soul: When reaching -10 Karma Points when slaying a creature your next attack that deals damage does additional force damage equal to your characters level. When reaching -25 Karma Points as a bonus action you can regain a single use of an ability that is restored on short rest (excluding action surge) once per long rest. When reaching -40 Karma Points become shrouded in shadow and gain the ability to teleport to an unoccupied space you know within 60 feet for 10 min once per long rest. When reaching -60 Karma Points once per dawn as an action you can bestow a divine curse to a creature you can see within 60 feet, the creature must make a Wisdom saving throw DC 20 or have disadvantage on attack rolls, ability checks, and reduce its AC by 4 for 1 hour. This save bypasses legendary resistances however, the creature can attempt its saving throw again at the end of your next turns ending the effect on a success.