Domain Expansion is the most supreme technique of any jujutsu user. It is achieved by expanding one’s innate domain with cursed energy while using a barrier to construct it inside a separate space. The caster then imbues their cursed technique within the barrier to complete the expansion, allowing them to deploy their ability all throughout the domain.
Domain Basics
All domains are different from each other, varying in their hand signs or techniques. However, they all tend to follow the same base rules unless otherwise stated.
Expanding Your Domain
All domains require a specific hand sign for their expansion to be activated, taking a Full Turn Action to activate. All domains cost 20 Cursed Energy unless specified, and take all creatures of your choice in a 175-foot circle centered on you, creating a barrier for 1 minute. The insides of a domain expansion vary from user to user, since it’s like showing your soul to your opponents. Outside of your domain, its appearance is of a giant black sphere floating in the air.
All creatures outside your domain will receive xd6 bludgeoning damage(with x being your Cursed Energy modifier) and be pushed to the edge of the barrier. They received an additional 1d4 bludgeoning damage per object they collided with as the domain pushed them. In case the domain forces them against a wall, they must start holding their breath until the domain is closed or shrunk.
Technique Burnout
Even if the barrier or the environment isn’t fully formed, casting domain expansion will cause the user’s innate technique to become unstable for a short time afterward. Right after ending your domain expansion, you cannot use any of your cursed techniques and gain 2 levels of exhaustion for 1 minute, or until you land a black flash.
Lethal Domains
Domains that are expanded to be lethal are constructed within a barrier imbued with the user’s cursed technique. The caster’s abilities are amplified and any cursed techniques deployed within the domain are guaranteed to hit their target. This sure-hit factor is derived from the barrier’s embedded technique, which is what makes this type of domain considered lethal.
Sure Hit Effect
While inside your domain radius, all of your cursed techniques will be affected by a sure hit effect. No matter what your cursed energy attack roll is, it will be considered a hit. Creatures will automatically fail saving throws for your cursed technique. This and any other effects of your domain only apply to targets that you choose inside it.
Non-Lethal Domains
In the past, Domain Expansion was a more common technique because domains weren’t constructed to be fatal. They only forced targets inside to obey the rules of the embedded cursed technique.
Peace Treaty
While inside Non-Lethal domains, no kinds of violence are allowed while a condition is not completely followed through. After the condition is completed, the domain will end.
Anti-Domain Clash
Because your domain has a peaceful condition, you cannot open it while another domain expansion is active, however lethal domain expansions cannot be opened as a reaction to your domain opening. You may use your reaction to open your domain against a lethal domain, in which case the clash is different. The domain with more refinement points instantly destroys the other. In the case of two non-lethal domains opening, the one with more refinement points will instantly win.
Domain Refinement
As with every technique Domain Expansion gets better with refinement and specialization. A refined domain and a normal domain are very different, while in the second case, most semi-grade 1 or above sorcerers could escape, a refined domain can bring trouble to even special-grade sorcerers.
Refinement Points
The longer you refine your domain, the more its refinement points will grow. You will start out with 1 refinement point, which defines many things about your domain. Your refinement limit is 1000 refinement points, only the elite of the elite have ever reached said point.
Refinement Benefits
The more you refine your domain, the more versatile you can make it. Depending on your refinement points, you will gain the following benefits:
| Benefit | Description | Refinement |
|---|---|---|
| Domain Durability | Your domain will increase in its durability the more refined it is. Your domain hit points are increased by +1 per refinement point you have. | 1+ |
| Barrier Resistance | The stronger the barrier of a domain on the inside, the weaker it is on the outside. You have realized this, and have found ways to go around it. As part of expanding your domain, you may decide if you want to make your barrier have vulnerability on the inside in exchange for it being resistant to all damage on the outside. In addition, you may spend additional 5 cursed energy when expanding your domain to make it perfectly balanced, making both outside and inside have no vulnerabilities or immunities. | 100 |
| Quicker Expansion | With lots of training, you have learned how to use your domain hand signs with more efficiency. Your domain now costs an action instead of a full round action. | 200 |
| Increased Potency | While inside your domain, your techniques are at their strongest. While inside your domain, your cursed techniques and domain damage if any have additional dice equal to your Cursed Energy modifier. | 300 |
| 0.2 Second Expansion | You have learned how to expand your domain so quickly that almost no one can react to it. As part of opening your domain, you can make it last only until the end of your turn. The cost for this domain expansion is halved, and it cannot be reacted to unless the creature has a higher Dexterity score than your Charisma score. When opening your domain this way, all creatures inside it will be targeted by its effects, you don’t have the option to choose. | 400 |
| Lasting Domain | With great practice, you have learned how to make your domain last for far longer than it normally would. Your domain now lasts for 2 minutes instead of 1. | 500 |
| Domain Amplification | You have learned how to utilize the power of a domain, without actively using it. As an action for half as much Cursed Energy your domain requires, you can cover your body to “wear” your domain in order to neutralize cursed techniques for 1 minute. Once activated, you automatically negate any defensive technique, offensive technique, or spell, that affects you, and you can bypass barriers such as infinity. You will also negate a domain’s sure hit effect if you’re inside one. In addition, you can not use your Innate Technique unless you dismiss Domain Amplification as a bonus action. Even if you dismiss it, for the minute you can reactivate it as a bonus action without spending the cursed energy again. This technique does not work against techniques on Maximum Output if the user has 51 or more higher refinement than you. If they are within 50 refinement of you, you have resistance to their technique, and if they have 51 or less refinement than you, you are immune to their techniques even if they use Maximum Output. | 600 |
| Efficient Expansions | It is no secret that opening and maintaining a domain is a very complicated job, requiring lots of cursed energy quantity, practice, and refinement. You have refined this with training, reducing your domain expansion cost by your Cursed Energy modifier. In addition, you only gain 1 level of exhaustion after your domain is over. | 700 |
| Durable Barrier | Your domain barrier has become hard and quite unbreakable, making escape or forced entry almost impossible. Your domain will gain immunity to non-magical damage from both sides, however, it will still be resistant to all damages from the inside and vulnerable to all damages from the outside. In addition, your domain’s refinement points are doubled when calculating your domain’s hit points. | 800 |
| Compression | You have found a method to make your domain take up less space while making it harder to hit from the outside. As a bonus action while on your domain, you can spend 5 cursed energy to compress it, making the outside become a small circle of 5ft. Inside, however, will be the same size. Attack rolls against your domain on the outside are made with disadvantage, while barrierless domains must use this feature to target your domain on the outside. This lasts until the end of the domain. | 900 |
| Total Mastery | You have reached the pinnacle of Jujutsu, mastering domain expansion. You have mastered your domain hand signs and may expand your domain as a bonus action instead of an action. You may reduce your domain expansion’s cost by your proficiency bonus, and while inside the domain techniques that use an action can now be used as a bonus action, and techniques that take a bonus action can now be used as a free action. In addition, your domain now lasts for 3 minutes. | 1000 |
Additionally, if you have the Reverse Cursed Technique feat and a Domain Refinement of 950 or higher, you gain the following feature:
Burnout Recovery. You have realized the complicated issue with Technique Burnout can be solved in a very simple fashion. You only need to substitute your brain for a new one! Whilst under the effects of Technique Burnout, you can expend 8 cursed energy as a reaction to regain your Cursed Technique and remove the exhaustion gained from burning out. Every time you use this feature, you must succeed on a DC 5 Constitution saving throw. On a success, you regain your Cursed Technique without major consequences. On a failure, your eyes and nose start to bleed profusely as you take 8d6 psychic damage and cannot take actions or bonus actions until the start of your next turn.
The Constitution saving throw DC increases by 5 for every success, being reduced by 5 for every minute that passes and returns to its original DC at the end of a long rest.
Ways of Refinement
There are multiple ways of refining your domain, from training with yourself to clashing with other people’s domains. Below is to list of how to gain refinement points:
| Method | Description | Rewards |
|---|---|---|
| Training | Probably the slowest method, but every little progress counts. Once per day, you can spend a number of Cursed Energy up to your Cursed Energy modifier to add to your refinement level. This Cursed Energy can only be regained the next day. | X |
| Domain Casualties | One of the quicker methods of refining your domain is to destroy opponents with your cursed techniques while inside it. If you reduce a creature to 0 hit points while it’s inside your domain expansion, you will gain refinement points. The refinement points are only gained if the creature’s CR was at least half of your level(rounded up). | 20/Creature |
| Domain Superiority | just subjugate another one with your own. If you win in a domain clash, you’ll gain refinement points from your domain superiority. You may only benefit from this once per long rest. | 100 Points |
Incomplete Domains
Through a great study of your technique and a lot of creativity, you have reached an incomplete domain. As an action for 10 cursed energy, you can expand your incomplete domain in a 90-foot circle around you for 1 minute. To do this, you must be surrounded by objects or barriers on all sides within 90 feet of you since you’ve yet to learn to apply a barrier. Since you haven’t imbued a cursed technique within your domain it won’t have a sure-hit effect, however, it will still improve your cursed technique by allowing you to make cursed energy attack rolls with them with advantage and creatures have disadvantage when making saving throws against your cursed technique. Your domain will have the same effects it does at 18th level, however, any of its damage dice, effect duration, or cost reductions will be halved. In the case your domain reduces cursed techniques’ cost to 0, it will instead only be halved.
Weak Points
All kinds of barrier techniques have a weak spot, domain expansions could not be different. You can only deal damage to a domain’s hit points once you’ve found its weak spot unless you’re from outside the domain.
From Inside
Breaking a barrier from the inside is almost impossible, even if you do find the weak point of the barrier you’ll still be targeted by the domain’s constant effects. To break a domain from the inside, you must find its weak spot first by making a DC 30 Perception check. On a failure, the target cannot find a weak spot. On a success, you will find the domain’s weak spot, now being able to target it for your attacks.
From Outside
While breaking a barrier from inside is nearly impossible, breaking from the outside is a much easier task. You may target the domain for your attacks. It automatically fails any saving throws, and it is vulnerable to every kind of damage you deal but psychic damage.
Forming a Weak Spot
Sometimes, even though it may seem like a disadvantage, you can forcefully enter a domain expansion by creating a weak spot, generally a hole of some sort. After you have reached at least 1/3rd of the domain’s maximum hit points, you can take an action to make a Strength, Charisma, or Wisdom saving throw to forcefully open the domain. On a failure, the domain won’t have a hole on it. On a success, you will form a 10ft. by 10ft. hole in the domain that allows you and any creatures to enter inside the domain. The moment any creature enters the domain they will suffer the effects of the sure-hit.
Domain Clashes
Two domains expanding at the same time cause a domain clash, a battle solely defined by who has the most refined domain and the most talent as a sorcerer.
Domain Clash
Once a creature expands its domain, you may use your reaction to expand your own domain as well. The domain battle will be defined by the one with the most refinement points, being the defining factor in deciding the winner. However, even if you do have refinement points to destroy the opposing domain it will take a number of rounds equal to the amount of refinement points that you have above the opponent’s domain. See the table below to see how much rounds it takes:
| Refinement Points Above | Rounds Needed |
|---|---|
| 10 | 9 |
| 20 | 8 |
| 30 | 7 |
| 40 | 6 |
| 50 | 5 |
| 60 | 4 |
| 70 | 3 |
| 80 | 2 |
| 90 | 1 |
| 100+ | 0 |
While on the domain clash, the sure-hit effect of both domains will be negated. The domain expansions will create a 350 foot area, where 175 feet of it will be within one domain’s area while the other 175 feet is for the other’s domain. The loser’s domain area will shrink by 15ft. per round passed. Right after you break the domain, your sure-hit effect will come back into action.
Equal Refinement Clash
Although an extremely unlikely scenario. When two Domain Expansions of equal refinement clash, they completely nullify each other, not being able to overpower or be overpowered, so it’s up to the two sorcerer’s to maintain their domain while bringing the opponent’s down. As soon as one of the domain casters reach 1/3 (rounded down) of their maximum hit points they need to succeed in a DC 15 roll with no modifiers to maintain concentration on their domain. On a success, the domain is kept stable and they can keep going. On a failure, their domain breaks, giving in to the opponent’s, and they suffer the after effects of Burnout from Domain Expansion.
Multiple Domain Clashes
A battle of two domain expansions is already hard to describe, now one of three or more… When three or more domains are involved, the rules are the same, with the domains with less refinement being destroyed as soon as the necessary rounds pass. The barrier is expanded by 175ft. per domain involved, with the weaker domains getting reduced by 15 feet at the beginning of each round.
Barrierless Domain
You have refined your domain expansion to new levels, making it become a true work of art.
Different Properties
When you expand your domain, you may choose to not get a barrier up and remove the time limit. Your domain expansion range increases to 655 feet, and it has a center at the middle. Your domain cannot be destroyed unless you receive 1/3rd of your maximum hit points in damage, in which you must make a DC15 + half the damage taken Constitution saving throw. On a failure, the domain is destroyed. Your techniques still have a sure hit effect, however due to not having a barrier your domain is much simpler to escape. Also on a domain clash, your domain effects and cursed techniques can target the outside barrier of the other domain directly. This can only be achieved by gaining a breakthrough after reaching 1000 Refinement Points.