The Manipulator

Those who become a Puppet Master warlock chose to trade their soul to become part of the god Arsk-Tua's grand design of making all of the multiverse bend to his will, as he searches for a way to his home plane. Puppet Masters choose not to specialize in any kind of close range magic, instead having their minions attack while they stay behind. Puppet Masters have been know for even controlling whole armies to suit their will. Since the cult of Arsk-Tua is so small, most people don't recognize the black mask with a giant yellow eye in the center that most of his cultist's wear. Their melee weapon is usually a scythe. Warlocks of his cult are usually from families that have worshiped him for generations. 

You cannot learn Abjuration, Necromancy, and Transmutation spells. 

Arsk-Tua's Subtle Possession

You gain proficiency in the deception and persuasion skills. 

While not in combat, you can attempt to convince NPC that shares a language with you that they should be on your side. The amount of people who you can convince is equal to twice your warlock level. To try this, you must do a deception and persuasion check against their Intelligence. You can tell these people to fight for you, and will help you in any way possible. 

Puppet Creator

During a long rest, you can spend 30 minutes creating a Tiny doll. To make one, you need woodcarvers tools, and at least 25 gp in materials. Once a day, you can use an action to place up to 2 of these puppets on the ground. If you try to control more than the maximum you can control, they all go berzerk and attempt to destroy everything they can see. This ability acts like the Tiny Servant spell from Zanathar's Guide to Everything on page #169. This spell doesn't require concentration and lasts for up to 1 hour. They all have vulnerability to fire damage and they roll a d6 for their attack instead of a d4. Their HP gets increased equal to your Charisma modifier. If the puppet is killed, you cannot use it for another use of this ability. You can maintain control on 6 at level 10, and 8 at level 18. 

Arsk-Tua's Control

Once every long or short rest, you can attempt to control a creatures mind. If they don't bend to your will, they shall be killed. When you use this ability, target one creature within 30 feet of you. They must make an Intelligence save against your spell save DC. If they fail, they become an ally to you and your allies. They stay under this control forever. If they succeed, they take 10d10 physic damage. 

Arsk-Tua's Complete Possession

When you use this ability, you can actively control targets from your Arsk-Tua's Subtle Possession ability that is equal to your warlock level. This acts like you are concentrating on a spell, but you can cast Eldritch Blast as normal. When the targets first get possessed, they must make a Wisdom saving throw against your spell save DC. If they fail, this ability works as normal. If the succeed, the effect on them stops. While the target is possessed, you can make them do anything you like. This lasts for up to 8 hours or until you end it as a bonus action.