You spend one of your hit dice and take damage equal to it instead and focus the energy into your next attack. This damage is taken ignoring temporary hit points. You must declare you are using this feature before the attack is made. The powered up attack gains a bonus 4d4 damage. This damage increases to 6d4 at level 6, 8d4 at level 11 and 10d4 at level 16. If you drop down to 0 hit points from this feature, your attack is made as your body is engulfed in a white flame fueled by your soul. You instantly die and cannot be revived.

All Sankta have a halo that constantly emits dim light for 60 ft. The light can be covered by dense enough material such as a black piece of cloth, but doing so will cause the Sankta to feel sligh discomfort.

You gain a +2 to hit for all projectile weapons and gain innate spell casting. You can use this feature to cast the following spells at first level for times equal to your wisdom modifier, minimum of one per long rest.

Sacred Flame

Sanctuary

Shield of Faith

Your wisdom score increases by 2 and your dexterity increases by 1 to a maximum of 18

While Sanktas develop at a rate similar to humans during childhood, their development seemingly stops upon reaching adulthood. Maybe it's because such close ties to their god, Sanktas have been known to live for up to a thousand years.

Sanktas have a slender build and can vary in height between 4 to over 6 feet tall.

While varying in upbringing and personality, all Sanktas are good natured. It's very uncharacteristic for a Sankta to intentionally cause harm to an innocent, never the less find joy in it. 

Your base walking speed is 30 feet

There is always a divine power watching over your, whether or not it's paying attention is a different story.

You gain proficiency in the Insight skill, and you have advantage on saving throws against being charmed or being put to sleep.

You can speak common and celestial.