Ten Shadows Technique

You have the Zenin Clan’s praised technique, said to even equal the Six Eyes.

Cursed Energy
Starting at 1st level, you can harness your negative feelings into a usable source of energy called cursed energy. These feelings can be harnessed into attacks or abilities. The amount of cursed energy you possess is based on your class; some classes use a modifier, either Charisma or Wisdom (player’s choice).
Your Cursed Energy DC is 8 + your Cursed Energy ability modifier + your proficiency bonus.

Divine Dogs
Beginning at 1st level, you have the prized technique of the Zenin clan, the Ten Shadows Technique, allowing you to summon shikigami from the shadows. As an action for 1 Cursed Energy, you may summon up to 2 Divine Dogs (1 Cursed Energy per dog) anywhere within 5 feet of you. Any shikigami summoned as part of this technique lasts until it is reduced to 0 hit points or you dismiss it at will. They regain all lost hit points after a long rest.
When the Divine Dogs are reduced to 0 hit points, they can only be summoned again after 1 minute. Divine Dogs count as 1 shikigami for summoning purposes.
Your shikigami cannot use actions on their own. You can spend a bonus action to command the shikigami to take an action. You may also spend an action to order them to do something more specific, such as protect a creature, grab an object, defend an area, and so on. The number of shikigami you can control at once is equal to half your level (rounded up).

Trial
Once you reach 3rd level, you have gained access to your other spirits, and you must face them in combat alone to gain access to them. As an action, you may summon any shikigami listed in the table below within 5 feet of you. If you haven’t battled against this shikigami and won, the shikigami will be berserk. If you have battled against the cursed spirit alone (does not include using your tamed shikigami) and reduced it to 0 hit points, you will now be able to summon the shikigami without it being berserk. You can summon a number of shikigami at a time equal to half your sorcerer level rounded up (with the exception of the Divine Dogs and Rabbits).

Any summoned shikigami that is reduced to 0 hit points (excluding Divine Dogs) can only be summoned again after a long rest, with the exception of Rabbit Escape, which can be summoned at any time. When you reach 10th level, you may summon lost shikigami again after 1 minute.

Shadow Storage
At 6th level, you may store objects in an extradimensional space within your shadow. Putting objects in your shadow takes no cursed energy. However, you must spend 1 Cursed Energy to interact with an object in this space, potentially removing it. All items in your shadow still count against your carrying capacity.

Well’s Unknown Abyss
When you reach 11th level, you can now combine your spirits and give them stronger forms. As an action, you may combine two of your summoned creatures into a single creature, granting one of them the Cursed Spirit Alteration feature. They lose their alteration if they are reduced to 0 hit points or you undo it as a bonus action.

Domain Expansion: Chimera Shadow Garden
Finally, at 18th level, you have learned how to expand your own domain from the shadows. Your domain is a huge shadow barrier, filling your surroundings with overwhelming darkness. Any hostile creatures that end their turn within your domain’s range must make a Dexterity saving throw or become restrained. They can make Strength saving throws at the beginning of their turns, ending this effect on a success. The area counts as difficult terrain for all creatures of your choice, and you are under the effects of freedom of movement as long as you are within the domain.
Shadow Clones. While inside the domain, as a bonus action, you can spend an amount of Cursed Energy up to your Cursed Energy modifier to create a number of clones of yourself equal to the energy spent. The clones are identical to you, but don’t keep your weapons or hit points, and cannot use Cursed Energy. Their hit points are equal to your Cursed Energy modifier, and they become a shadow puddle once they’re reduced to 0 hit points. You may use your reaction to switch places with a clone when you are hit, making the clone take the hit instead.
Shikigami Clones. Your domain allows you to summon copies of your shikigami to overwhelm your opponents. Whenever you summon a shikigami, you can spend additional Cursed Energy equal to the shikigami’s cost (even if the shikigami costs 0 Cursed Energy, its cost for this feature is treated as if you were outside your domain) to summon a perfect copy of said shikigami alongside it. You can spend cursed energy this way a number of times up to your Cursed Energy modifier on the same turn. You cannot create copies of Mahoraga with this feature.
In addition, your shikigami do not cost you Cursed Energy.