Too strong too possess

you are a very powerful being. a demon tried to possess you and you took control of it and gained its powers

Expanded Spell List

The demon lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Fiend Expanded Spells

Spell Level	Spells
1st	burning hands, command
2nd	zone of truth, scorching ray
3rd	fireball, revivify
4th	fire shield, wall of fire, death ward
5th	flame strike, raise dead

Dark One’s Blessing

Starting at 1st level, when you reduce a hostile creature to 0 hit points, you gain temporary hit points equal to your Charisma modifier + your warlock level (minimum of 1).

Demonic Rage

you are ******* pissed at whatever attacked you and go into a demonic rage. your eyes glow red and you radiate heat making you immune to cold damage

Demon controlled changes

Starting at 6th level, you can control your demon inside to alter fate in your favor. When you make an ability check or a saving throw, you can use this feature to add a d10 to your roll. You can do so after seeing the initial roll but before any of the roll’s effects occur.

Once you use this feature, you can’t use it again until you finish a short or long rest.

Fiendish Resilience

Starting at 10th level, you can choose one damage type when you finish a short or long rest. You gain resistance to that damage type until you choose a different one with this feature. Damage from magical weapons or silver weapons ignores this resistance.

Hellish inferno

Starting at 14th level, when you hit a creature with an attack, you can use this feature to instantly ignite the target with a hellish burn. The creature burns with a hellish inferno and cannot move until the end of your next turn.

 At the end of your next turn, the target explodes, damaging enemies in the area. If the target is not a fiend, it takes 10d10 fire damage and the nearby enemies are ignited.

Once you use this feature, you can’t use it again until you finish a long rest.