Lin Yiyi's "Merciful Strike" was indeed an extremely useful skill for capturing prisoners.
The corrupted beings left dazed by the Four Dark Deuces' explosions were utterly powerless against Lin Yiyi's sudden assault.
Even though she was technically a nimble T... but who said tanks can't kill?
She was a bona fide semi-defense-oriented warrior tailored with gems. Relying on her gem spells for instant control, coupled with her high agility and high perception, she could always maintain a significant advantage in one-on-one close combat, even without any proper burst skills.
This had to do with another one of Lin Yiyi's skills:
