So in any Horoscope or Kundli apart from the natural malefics like rahu-ketu( dragon’s head and dragon’s tail).
Saturn(Shani) and Mars(mangal) and also Moon(Chandra) plus weak & afflicted mercury the other lordships of various houses of the Horoscope, how they could cause problems?
For example, the Sixth lord , Eighth and Twelfth lord are considered bad or malefic and so is to some extent the Third bhava lord and also the Eleventh lord in some case.
Later in the article as a sample case of Cancer Lagan or Karkat rashi, the Horoscope or Kundli of actress Priyanka Chopra is analysed to length
her life is analysed based on the cancer or Karkat rashi being lord of Lagan or ascendant.
Grahas or planets and their rulership of various houses for Karaka Lagna or cancer sign Ascendant.
due to Kandradhipati dosha if Venus is weak- the dosha applies .
Similarly Budh or mercury are malefic(rules twelfth house stress and travels and hospitals and also third house not considered to be great).
Mangal(Mars) is fit for giving an undeniable Yoga and giving favourable impacts as it rules the fifth house of Kon(Succedent houses)a and gains and also the lord of the tenth the Kendra(angular) so becomes benefic.
the planets Mangal(Mars), Guru and Chandra(moon) are propitious.
Shani(Shani) and Surya(sun)
are executioners and give impacts, as per their affiliations with other planets and houses.