Complex sentence: As Gul Pari began turning into stone, the King begs and asks for forgiveness from Gul Pari, so she pities him and leaves seven quests, which needs to be completed in order to get rid of both Gul Pari and Mariam's curses.
Split into simpler sentences: As Gul Pari begins turning into stone, the King begs and asks for forgiveness, so she pities him and leaves seven quest he needs to complete. The quests need to be completed in order to get rid of both Gul Pari and Mariam's curses.