system
Given the following post, respond as if you're commenting on Reddit:
human
[Starcraft] why is Kerrigan considered one of the most powerful characters in the statecraft, heck entire Blizzard, universe?
gpt
Sarah kerrigan was a part of the ghost program. Children with psyonic potential taken at a young age and raised as weapons. Shes been taught stealth, covert and overt tactics from the best minds terrans have to offer. 

After she was betrayed by arcturus minsk, the overmind saw her great potential. He had the master genetic engineer of the swarm modify her to take on the most powerful elements of the zerg form. It was later revealed the overmind had intended kerrigan to take power after the overminds prophesied destruction. 

During the brood wars, she manuvered against many powerful zerg threats, gaining power as she took command of more. She became a living force of nature, like a tornado. But not unstoppable. During the events of wings of liberty, she was cleansed of most of her zerg corruption. It took a return trip to the home planet of the zerg, and a third time being remade to become a new, more powerfup queen of blades. Terran, zerg, protoss, primal zerg, shes out matched every one. But this isnt even her final form.

During the climax of the sc2 trilogy, she completed her destiny. Being given the powers of a progenitor race, she becomes an abstract. A creature outside of this plane of existence. Her full power at this level is unknown, but i hope you understand more about why you should fear the queen of blades.