Whether they discover this by meeting an angel or when a traveling Aasimar got a peek at their scribbles as a child is, it is ultimately up to you. Celestial as a language sounds like a heavenly choir when spoken, and is written with a grace and fluidity that no mortal language has replicated.

When they reach 100 years of age they continue to live on sustained directly by their godly parent or if their godly parent does not wish to they may sustain their selves through gaining their own renown and worship.

Most races have tendencies toward certain alignments, described in this entry. These are not binding for player characters, but considering why your dwarf is chaotic, for example, in defiance of lawful dwarf society can help you better define your character.

 Regardless of your position in that range or your parent's race, your size is Medium.

Your base walking speed is 30 feet.

The threads of fates unravel and tie themselves anew for a demigod. When you roll a 1 on an attack roll, ability check, or saving throw, you can re-roll the die and must use the new roll. Can only be used once a short/long rest.

Your connection to the divine is strong and its strength gives you away to others. Creatures with the celestial, fey or fiend creature type as well as creatures with a divine connection know you are a demigod. A successful Intelligence (Religion) check can be done against your Charisma (Deception) check to discern who your godly parent is. In addition, if you are of a divine class such as cleric, you must choose the domain of your godly parent.

You are innately better than others in areas pertaining to your godly parent's divine domain. Choose an option from the Divine Domain Ability Score Increases that pertains to your godly parent's domain.

Your ability scores increase based on the Divine Domain of your godly parent. If your godly parent has more then one Divine Domain then pick one of those they have to be aligned with. The domains are Death, Knowledge, Life, Light, Nature, Tempest, Trickery, or War.

Arcana Your Intelligence score increases by 2, and your Charisma score increases by 1.

Death: Your Constitution score increases by 2, and your Intelligence score increases by 1.

Forge: Your Intelligence score increases by 2, and your Constitution score increases by 1.

Grave: Your Constitution score increases by 2, and your Strength score increases by 1.

Knowledge: Your Intelligence score increases by 2, and your Wisdom score increases by 1.

Life: Your Constitution score increases by 2, and your Charisma score increases by 1.

Light: Your Charisma score increases by 2, and your Dexterity score increases by 1.

Nature: Your Wisdom score increases by 2, and your Intelligence score increases by 1.

Tempest: Your Charisma score increases by 2, and your Strength score increases by 1.

Trickery: Your Dexterity score increases by 2, and your Intelligence score increases by 1.

War: Your Strength score increases by 2, and your Constitution score increases by 1.

Your godly parent has dominion over a specific portfolio. Choose an option from the Divine Portfolio Traits that pertains to your parent's divine domain. 

You can pick one of the traits below provided you meet the divine domain prerequisite.

Unswerving of will and unassailable of mind, you have advantage on saving throws against being charmed and frightened. In addition, you cannot be aged magically.

Even though it is your godly parent that makes you special, you still have a mortal parent. While you don't receive any of the racial traits that your mortal parent has. Your mortal parent must be humanoid and you physically resemble that race in its most epitomized form.

Demigods have a limited ability to sense events involving their portfolios. You automatically sense notable events and minor events within 5 miles that involves your portfolio. When a demigod senses an event, it merely knows that the event is occurring and where it is. The demigod receives no sensory information about the event. For example, if a demigod of the nature portfolio was within 5 miles of a forest fire it would become aware of it and where it is happening, "disturbance in the force".