The volatile planar energies that suffice their lands have seeped into your very essence.
Your eyes glow a pearlescent white when in complete darkness. When casting spells using Radiant magic your scars or wounds glow almost as if light is trying to escape from your body.
---------------------------------------------------------------------
When you cast a spell that deals radiant damage using a 1st level spell slot you may expend a hit die and take damage equal to the maximum roll of the chosen hit die and reduce your maximum hit points to target a second target other than the original and replicate the spell towards that target. You can use this once per long rest. Your maximum hit points return to maximum after a long rest.
-----------------------------------------------------------
You gain access to the Light cantrip and whenever you cast a cantrip that deals radiant damage, you can target one creature as normal or target two creatures within range that are within 5 feet of each other.
----------------------------------------------
You can interpose divine light between yourself and an attacking enemy. When you are attacked by a creature within 5 feet of you that you can see, you can use your reaction to impose disadvantage on the attack roll, causing your body to ignite in a radiant flare before the attacker before it hits or misses. An attacker that can’t be blinded is immune to this feature. You can use this feature a proficiency times per long rest.
--------------------------
Due to the volatile nature of your element you gain resistance to radiant damage, additionally whenever you take Necrotic damage your maximum hit points are also reduced by the damage taken. Reduced hit points return to maximum after a long rest provided you take the long rest to allow your radiant body to heal.