I'm actually reading it but this manhwa is the definition of this question lol
https://www.mangago.zone/read-manga/though_i_may_be_a_villainess_i_ll_show_you_i_can_obtain_happiness/
https://www.mangago.zone/read-manga/with_one_day_left_i_ll_break_all_the_destruction_flags_serves_you_right_rta_24_hour_record/
https://www.mangago.zone/read-manga/the_one_within_the_villainess/
https://www.mangago.zone/read-manga/the_villainess_slow_prison_life_began_with_her_broken_engagement/
Resetting Lady (she's born the heroine and keeps dying repetitivly until she basically becomes the villain)
The Villainess Reverses the Hourglass is the og bad bitch around here and a personal fave !! although she didn't commit arson, she did get her stepsister executed
gimme your fav manhwa with the baddest bitch villainess, I'm talking about something that's gonna make me empowered enough to commit arson lmao.
Btw I've read Roxana, your throne, beware the villainess, death is the only ending for the villainess. I'm looking for the same feel as them.