Karmic Dasas of Life
The most Karmic dasa belongs to Mercury not ever to Ketu as Mercury dasa or planet sitting in Mercurian dasa is going to create turmoil to end one pattern of life and that is why in Lal-Kitab the Mercury is given so much importance – Even in Bhrighu Samhita- Mercury dasas are considered very important as during the death ritual as well- what changes are your name(Mercury) and only name of Ram stays -That is why people who have their 3rd lord in the nakshatra of Mercury – either their name is easily forgotten or changed frequently by everyone as this is the pattern of cycle they are carrying.