While most gods employ clerics to exercute their bidding or spread their meesage, a cleric isn't always what is needed. Exspecially when your devine patron is is more demonic than angelic. You foYour patron is any chaotic or evil devine deity, such as Bane, Myrkul and Shar or Cyric, Mask and Talos. 

Expanded Spell List

Your demonic patron gift you an extra arsenal of evil spells

Beshaba's Fortune

At 1 level, you have advantage on all attack rolls against creatures that you currently have a hex or curse on. They also have disadvantage on all attack rolls made against you while they are hexed or cursed.

Loviatar's Bane

At 6th level, choose two magical damage types and one melee damage type. You gain resistance to both of the magical damage types, while also gaining vulnerability to the selected melee damage type. You may choose to become simultaneously resistant and vulnerable to as many damage types as you wish. This feature lasts one minute and may be activated as a bonus action. You cannot use this feature again until you complete a short rest.

Talona’s Plague

At 10th level, after having reduced a creature to 0 hit points, a 5-foot-radius sphere of poisonous fog is created centred over that creature. The fog spreads around corners and, being heavier than air, will sink to the lowest level of the land, even pouring down openings. The fog heavily obscures the area and can only be dispersed by a heavy wind. When a creature enters the fog for the first time on a turn or starts its turn there, that creature must make a Constitution saving throw. On a failed save, the creature takes 5d8 poison damage and is considered Poisoned, or half as much damage on a successful one. Creatures are affected even if they hold their breath or don’t need to breathe. The area of fog grows by 5 feet at the start of your next turn and every turn after that until the fog is a 20-foot-radius sphere. At the start of your next turn after the fog has grown to 20 feet, the fog dissipates. This feature may be activated as a reaction and you cannot use this feature again until you completely a long rest.

Bhaal's Rage

At 14th level, whenever a critical hit is rolled while casting Eldritch Blast, the beam of energy rebounds off the target and hits the next closest creature that you are hostile to. Both creatures suffer the same amount of critical damage. If there are no other hostile creatures for the spell to reflect to, you regain one beam of Eldritch Blast.