Abyss-touched

Fiendform

When you choose the Abyss at 2nd level, you summon an amicus from that plane. Your amicus is a fiend. Your amicus gains proficiency in two of the following skills of your choice: Deception, Intimidation, Perception, and Stealth. In addition, you and your amicus have advantage on Charisma ability checks made to interact with fiends.

Demonic Corruption

Beginning at 6th level, the essence of the Abyss begins to bleed into your daily life. Other creatures which are not fiends and which are not friendly towards you have disadvantage on Charisma ability checks made to interact with you.

Abyssal Possession

Starting at 10th level, you can use an action to attempt to afflict a creature within 60 feet with a demonic presence which is allied with you. The creature must succeed on a Charisma saving throw (DC equal to your spell save DC). On a failure, the creature is possessed by a demon.
  Whenever a possessed target rolls a 1 on an attack roll, ability check, or saving throw, the demon takes control of the target. While a target is possessed, it acts normally, except that it perceives you and your allies as its allies, and its own allies as enemies.
  At the end of each of the target's turns while it is possessed, it can make a Charisma saving throw. On a success, the target regains control until they roll another 1.
  The possession lasts for 1 hour. On a target's third successful saving throw against this ability, or when the target is subject to a dispel evil and good spell or similar magic, the demon is expelled completely.
  You can use this ability once, and regain the ability to do so when you finish a long rest.

Demon Slave

Beginning at 18th level, you have the ability to call demons to your side from the Abyss. You can take an action to summon demons to unoccupied spaces of your choice within 60 feet of you. Roll a d6, which determines what demons come to your aid, as shown on the Demonic Slave table. Any demons summoned by this ability are charmed by you, and are friendly and helpful to you and your allies. After 1 minute, and at the end of every turn thereafter, any demons summoned by this ability can make a Charisma saving throw against your spell save DC. On a success, a demon is no longer charmed by you, and acts as it normally would, though it does not know it was charmed by you. A summoned demon can also make this saving throw if you or your companions do anything harmful to it, and begins making saving throws after each turn. Once you use this ability, you can't use it again for 7 days.

Demonic Slave
d6	Demons Summoned
1	1d8 vrocks
2	1d6 hezrous
3	1d4 glabrezus
4	1d3 nalfeshnees
5	1d2 mariliths
6	1 goristro