It's obvious by now that the extraordinary, unexpected powers we might want to seek in order to be of service to others all come from planting the right seeds. And so here the Master reminds us of the very most powerful way of planting these seeds: the practice of the Four Infinite Thoughts, from the first chapter.
Infinite love, which wants to give all living beings everything their heart desires. Infinite compassion, which wants to remove their tiniest little pain. Infinite joy, which wants to take them to a higher happiness than just houses and hamburgers: to a place of infinite happiness, beyond all fear or death. And infinite equanimity, which wants to do this for everyone, not just friends or family.
In Master Patanjali's day, an elephant was the ultimate war machine, powerful enough to destroy any obstacle. And so a being who had reached spiritual perfection was called a War-Elephant. When we transform into this angel, we will have ultimate powers: ultimate compassion; a knowledge of all things; and the ability to show ourselves anywhere in the universe, any time, to help others.
This is the true evolution of all the powers. You will see a child fall from worlds away, and be there to catch him or her, before you think to.