Pact Of Asmodeus

Asmodeus Summons you to his Domain and gives you the option to accept his offer.  Upon Accepting his offer he grants you a portion of his power and become his Champion. 

Asmodeus's Blessing

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

Expanded Spell List

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

1. Burning Hands, Faerie Fire
2. Darkness, Shatter
3. Fear, Fireball
4. Conjure Minor Elementals, Phantasmal Killer
5. Hold Person, Planar Binding

Asmodeus's Luck Blessing

At 6th level, you can call upon Asmodeus to grant you the ability to reroll one attack roll or saving throw or Ability Check. Unless Asmodeus chooses to give you the ability to use a 1d10 instead.

Asmodeus's Resilience

At 10th level, You choose one damage type when you finish a short or long rest. You gain resistance to that damage type until you finish a short or long rest. Damage by magic weapons and sliver weapons ignore this resistance.

Asmodeus's Gate of Demise

At 14th level, when you hit a creature with an attack, you can use this feature to send the creature to Asmodeus until your next turn. Dealing 10d12 Psychic damage as Asmodeus torments them and makes them see their worse fears. Once you use this feature, you can't use it again until you finish a long rest