Demigod-Omni Arcane

One of your parents is a God of Magic, and you've inherited some of their power. These Demigods, nicknamed the Omni-Arcane by some, are exceptional at recalling and using magic, even if the have never seen or heard of magic before. When you select this feat, you can't choose another one with the word "Demigod in it. in addition Choose one Deity from the Arcana domain to be one of your parents. You gain feats based on your current level:

1st level:

Arcane Defenses: your connection to godly magic has granted you several benefits:

• whenever you make an Arcana check, you can roll a d4 and add it to the total
• You gain the following spells, which you can cast at will: Mage Armor, Mage Hand (the number of hands that appear equals your proficiency bonus, and these hands can attack), Magic Missile, Magic Mouth, and Magic Weapon
• If your class isn't usually a spellcaster, you gain  spells equal to your spellcasting ability modifier. This determines your spell save DC and your Spell Attack modifier; Strength for Barbarian, Charisma for fighter, Wisdom for Monk, and Dexterity for Rogue

3rd level:

Improved Defenses: your connection has grown stronger, granting you additional benefits:

• when you take damage from magical attacks, you can use you action to reduce that damage by 1d12+ your spellcasting ability modifier. this die increases by 1 at 5th and 17th levels. you can use this reaction a number of times equal to your proficiency bonus, and you regain use after a short or long rest
• You have advantage on Arcana checks
• You can cast Magic Circle at will
• When you cast Mage Armor or Magic Weapon, you gain a bonus to that weapon or Armor equal to your proficiency bonus

5th level: 

Superior defenses: your connection has grown stronger, granting you additional benefits:

• You gain proficiency in Arcana checks
• When you cast a spell that has any Verbal, Somatic, or material components, you can cast the spell without using those components. In addition, you no longer concentrate on spells.
• When you cast a spell, you can use your action to cast it at a higher level
• While your Mage Armor  spell is active, you have resistance to magical damage

17th level:

• You gain proficiency in any check equal to your spellcasting ability modifier
• When you cast Mage Armor, you can use a spell slot to cast Magic Weapon as well, and the spell's duration is instead when you use a bonus action to end it.
• While your Mage Armor spell is active, you have immunity to magical damage
• You gain resistance to magical damage
• When you or another creature is targeted by an attack, you can use your reaction to cast your Mage Armor spell on that creature. You can target multiple creatures up to your proficiency bonus, and you can do so up to your proficiency bonus. You regain expended uses when you finish a short or long rest.