You start with a -2 penalty to all ability scores, but gain +1 to an ability score of your choice whenever you gain a level.

You gain +1 to an ability score of your choice. You gain an additional +1 to an ability score of your choice whenever you gain a level.

A devil is a reborn spirit of a mortal that sold their soul. They begin at their rebirth as a grunt soldier, and continue with an ageless body until they are truly destroyed.

Devils tend to Lawful Evil, as they abhor the chaos of demons.

A devil starts out as a small and insignificant creature, but their claws allow for easy climbing. Your walking speed is 20 feet, and you have a climbing speed of 20 feet.

Your size is small.

You have sharp claws that can be used as a natural attack. They deal 1d4 slashing damage.

Thanks to your infernal heritage, you have superior vision in dark and dim conditions. You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

When you reach 5th level, your darkvision becomes improved and you can see through natural and magical darkness up to a range of 120 feet.

As a devil, you gain some innate spellcasting. At 1st level you gain either the Fire Bolt or  Thaumaturgy cantrip. When you reach 3rd level you can cast either Burning Hands or Hellish Rebuke as a 2nd level spell once with this trait and regain the ability to do so when you finish a long rest. When you reach 5th level, you can cast the darkness spell once with this trait and regain the ability to do so when you finish a long rest. Charisma is your spellcasting ability for these spells.

At 3rd level, you gain an optional movement improvement based on your devil's shifting as it gains power.

At 5th level, your body develops and becomes stronger. Your size changes to Medium and you may choose one of the following bonuses:

Your body becomes enhanced by the Hellfires. You have resistance to fire damage. At 7th level, you gain either resistance to bludgeoning, slashing, and piercing damage from nonmagical weapons, or advantage on saving throws against spells.

At 13th level, your body adapts again to provide another movement bonus, either access to a new movement type or enhancing your current movement.