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

Demons mature slowly, reaching adulthood by age 35, and live up to around 600 years.

Demons are large, standing between 8 and 10 feet tall.

Demons naturally adapt and see in darkness and in fact prefer it. You can see in dim light within 60 feet of them as if it were bright light, and in darkness as if it were dim light. You can discern color in darkness.

You have advantage and proficiency on intimidation checks and you use your strength modifier for them. If you already have proficiency in it, it becomes expertise. Whenever you are in a room, bright light becomes dim light and dim light becomes darkness.

You are resistant to fire and necrotic damage.

You have a number of Demonic Points equal to your proficiency modifier which refresh after a long rest. Constitution is your spellcasting modifier for those spells. You can spend some of those points to cast a spell from the following spell list:

• Searing Smite - 1 point
• Burning Hands - 1 point
• Hellish Rebuke - 1 point
• Aganazzar’s Scorcher - 2 points
• Scorching Ray - 2 points
• Fireball - 3 points
• Ashardalon’s Stride - 3 points
• Wall of Fire - 4 points
• Fire shield - 4 points
• Flame Strike - 5 points
• Immolation - 5 points
• Investiture of Flame - 6 points

All of the effects from the marks of sins are 100% stronger. All of the effects from the marks of virtues are halved in strength.

You are vulnerable to Radiant and Cold damage. You must make a contract with at least one mortal once a week and complete the contract by the deadline set by the mortal. If you don’t then you get disadvantage on everything and your stats drop by their modifiers. Additionally you can’t regain demonic points after a long rest.

You can speak, read, and write Common, Infernal and Abyssal.