Kali, the Mother of all and destroyer of all, is the Shakti that works in secret in the heart of humanity manifesting herself in the perpetual surge of men, institutions and movements, Mahakala the Spirit within whose energy goes abroad in her and moulds the progress of the world and the destiny of the nations.  See Mahakali
The ancient idea of Karma was inseparably connected with a belief in the soul’s continual rebirth in new bodies.
If we believe that the soul is repeatedly reborn in the body, we must believe also that there is some link between the lives that preceded and the lives that follow and that the past of the soul has an effect on its future; and that is the spiritual essence of the law of Karma.
Karma is not quite the same thing as a material or substantial law of cause and effect, the antecedent and its mechanical consequence.
But Karma is more than a mechanical law of antecedent and consequence. Karma is action, there is a thing done and a doer and an active consequence; these three are the three joints, the three locks.
The Path of Works aims at the dedication of every human activity to the supreme Will. It begins by the renunciation of all egoistic aim for our works, all pursuit of action for an interested aim or for the sake of a worldly result. By this renunciation it so purifies the mind and the will that we become easily conscious of the great universal Energy as the true doer of all our actions and the Lord of that Energy as their ruler and director with the individual as only a mask, an excuse, an instrument or, more positively, a conscious centre of action and phenomenal relation. The choice and direction of the act is more and more consciously left to this supreme Will and this universal Energy. To That our works as well as the results of our works are finally abandoned. The object is the release of the soul from its bondage to appearances and to the reaction of phenomenal activities. Karmayoga is used, like the other paths, to lead to liberation from phenomenal existence and a departure into the Supreme. But here too the exclusive result is not inevitable. The end of the path may be, equally, a perception of the divine in all energies, in all happenings, in all activities, and a free and unegoistic participation of the soul in the cosmic action. So followed it will lead to the elevation of all human will and activity to the divine level, its spiritualisation and the justification of the cosmic labour towards freedom, power and perfection in the human being. 
Kartikeya represents victory over the hostile Powers. 
The peacock is the bird of victory and Kartikeya the leader of the divine forces.
Krishna is the Eternal’s Personality of Ananda; because of him all creation is possible, because of his play, because of his delight, because of his sweetness.
Sri Krishna as Lord of the divine Love and Ananda—and his flute calls the physical being to awake out of the attachments of the physical world and turn to that Love and Ananda.
Kriya in the dictionary means every practice which helps the gaining of higher knowledge such as the mastering of the breath, the repetition of the mantra, the habitual use of the Name, the daily meditation on the idea.
There is a Yoga-Shakti lying coiled or asleep in the inner body, not active. When one does yoga, this force uncoils itself and rises upward to meet the Divine Consciousness and Force that are waiting above us. When this happens, when the awakened Yoga-Shakti arises, it is often felt like a snake uncoiling and standing up straight and lifting itself more and more upwards. When it meets the Divine Consciousness above, then the force of the Divine Consciousness can more easily descend into the body and be felt working there to change the nature.