Angelic Soul

The radiance residing within your soul has begun to flow outward, blessing your attacks and imbuing your being with truer defense against the same element. In exchange for such Angelic power you are more susceptible to a darker element in return. You gain the following benefits:

When you gain this feat, choose one of the following damage types: Radiant, Fire or Lightning.

You gain resistance to the selected damage type. This resistance does not stack into immunity.

You do, however gain vulnerability to either Psychic or Necrotic damage. This vulnerability does not stack.

When you deal damage with a weapon attack or an unarmed attack you deal an extra 2d4 damage of the selected damage type. This increases by a further 1d4 at 8th, 12th, 16th, and 19th level

Additionally, in exchange for the base damage of 2d4 inflicted upon yourself, you can use a reaction upon taking your chosen damage type to engulf yourself in the purest of light, the holiest of fire or lightning from the heavens to turn your resistance to the magic damage into immunity until the end of your next turn. You can use this feature once per long rest.