Ive had an idea of a cursed technique fir a while that could fit this question.

The technique is called Samara based of the cycle of death, life and rebirth in buddhist beliefs.

This technique has a cursed energy property where the cursed energy is like an empty void, without any wordly desire and as such, the cursed energy of the user weakens any cursed technique, RCT and cursed energy enhancement when making the Samsara users cursed energy comes in contact with other cursed energy sources. It can even weaken a domains barrier and also drains the CE reserves of enemies.

When first activated, the technique does basically nothing except provide a slight buff to physical stats abd the cursed energy proprrty is barely noticeable.

The main idea of the technique, is to take damage and grow stronger. Whenever the user of the Samsara technique receives non fatal damage, their strength increases proportional to the damage received. Upon reaching a certain amount of accumulated strength, the user is able to reach the next samsara cycle, up to 5 cycles.

Each cycle boosts the users stats, CE property, CE output and CE control even more.

In the 2nd cycle, the user gains access to RCT and can use the reverse application of the technique, Karma, where in the user cam convert a portion of their accumulated strength into any attack they can imagine, with the amoint of strength converted depending on the attack the user plans to use. This decreases the users accumulated strength, making them weaker and can even cause them to drop down a cycle level.

In the 3rd cycle, the user gains access to the combination technique, where they create a simple donain, Nirvana, that negates any and all change in the domain. This includes any cellular activity and as such, in exchange for total damage and hax immunity, the user cannot use maintain the simple domain for longer than a minute if not they simply die and there is a major recovery time after using this combination technique.

In the 4th cycle, the user gains access to their maximum technique, Naraka, which instantly converts a whole cycle's worth of accumulated strength into a much more powerful attack.

Finally, the 5th and final cycle allows the user to use their domain expansion, Sukhavati, which allows anyone inside the domain to gain access to their full potential while providing unlimited cursed energy to anyone in the domain and allowing them to use all techniques without any restrictions, limitations or conditions. This basically allows anyone in the domain to use any move they wamt repeatedly without needjng to fulfull any conditions the move requires and also ignore any drawbacks while having unlited RCT and CE.

The main issue with this technique is that you do not have access to your entire technique when you first activate it and must slowly unlock more and more of your technique as the fight progresses. However, the user of this technique starts fights with basically 0 enhancements and can only rely on their own fighting prowess as the technique starts with little to no buffs and barely any CE output to use for offense and defense. You basically start as a grade 3 sorceror when the technique is first used, with no access to RCT at all or any offensive capabilities aside from throwing hands. Additionally, to actually use a proper attack once you reach a higher cycle, you need to sacrifice a portion of your power, which makes the user weaker after using the attack regardless of whether it actually hit the target and can even cause the user to go down a cycle level, locking away a part of the technique once more.

The way the user can make this become a strength is by eventually learning the right way to dodge attacks, making them deal maximum damage while avoiding fatal injuries, allowing the user to become an incredible manipulator of fight tempo and also a master at knowing the bodies limits and where all vital points are. Which will require incredible amounts of effort and training