What is your OC, technique and domain?
I'll go first. Mine is Keiro Yamada, Ethereality. He can manipulate the souls of any being that have willingly gave their souls or he can take them by force if he is a higher grade. (special grade) his domain is "tortured souls of the damned" hundreds of graves (of the strongest of souls he has collected) appear randomly, the sure-hit effect is the endless torment of your soul, people trapped in the domain have to take a gamble and jump into a grave. All graves have 5 outcomes. Instant robbery of the soul, restless torment out of the domain, the confiscation of the technique letting Keiro use it for the duration of the domain, instant death and finally safety. While he is able to use RCT he has a huge setback, with his technique needing insane amount of CE it's a endless cycle of torturous pain on his body, leading to his entire body being covered in scars and wounds, his technique allows him to summon the souls he has either taken/been given to either allow him to use their techniques or use them as an army.